Whenever you are not sure of anything or need help, just ask in this forum and members will help you with appropriate answers. This forum is also rich with various threads and guides about Bitcoin, the wallets to use, security of the funds, exchanges and other crypto related services. Just make full use of the forum search button or this archiving tool (https://ninjastic.space)

Here are some few tools that are good for reading
1. https://www.lopp.net/bitcoin-information.html
2. https://bitcoin.org/en/resources

Firstly, it depends on the Country you are from. Different locations have different payment methods and banks that charge different forms of fees. Some expensive while others are cheap.
But a centralized c2c service (Read Binance p2p) usually offers the best rates due to very many offers available, but this is at the cost of your privacy.

In my locations, I usually see very good offers, sometimes even above the market value (for sales) and below the market (value for buys)

I mean, your site contains a number of typing errors and incorrect grammar. You might want to correct them to make it look more professional. Here are a few examples
Perhaps you meant through
Perhaps you meant a lot
Perhaps you meant on high demand
You have only 240 active users so far. So that's hundreds of users, not thousands.

Over the years in this forum. I have seen a multitude of them do the same thing as you, so, with your approach, I am not surprised. We are not noobs here as you think. Try else where.

The proof is right on your site(s). I don't need to waste anytime posting it here. Anyone sensible enough should be able to confirm that it's a scam.

Do I need to prove to a scammer that his site is a scam? Come on.

Looks like we just pissed off yet another scammer  
I love it when I see a scammer get salty. It simply means the scam accusation was on point, we have cut off his only source of income. Get a legitimate job, dunghole and stop living off scamming people.

I was going to do some test mining, but I guess I am going to let this one pass.

I guess at one point it will north of 100 GB of RAM? Let's be honest, what will be the point of the project?
"A leading global decentralised digital economy ecosystem"? Wow, just wow.

1. The escrow provider perhaps for the good service in handling the transaction between you, the buyer and seller.

2. Sending positive feedback to your trade partner is not a must.

3. Look at this scenario. If I am trading with you, I am a newbie and I go in first since my rank is newbie and can not easily be trusted. Can you send me positive feedback for going in first? Obviously, I had no choice but to go in first 
I would apply the same logic on trades facilitated over an escrow service

The scammers are not sleeping and always trying to find new ways of pushing their scam to unsuspecting users. OP thanks for the keen observation. I have sent negative feedback to both profiles and supported the flag you created against one of the profiles

I create the second flag for his alt account, just in case he tried to use it to make a new ANN.

https://bitcointalk.org/index.php?action=trust;flag=3216

Then go ahead and design a mining algo that you think can do better and also create your own forum dedicated to the project instead of trying to turn bitcointalk into shitcointalk.

Someone once told me that Ph.D. = Permanent Head Damage. If OP isn't a live example of what that person talked about, then I don't know who is?

What is the business model of your app.

You say you pay people rewards through surveys, videos, games, advertisements etc. I don't see how this is sustainable unless you have a sufficient source of revenue. How do you earn revenue?

Also, your site has a lot of typos, please check and correct.

Could Ninjastic be missing out on some results.

I search about all the addresses posted by this user: Jocuserious and also checked the "include child boards" check box - https://ninjastic.space/addresses?author=Jocuserious&child_boards=true

It shows all the other addresses he posted except the recent one. Any ideas on what happened?

You mean like the reds would disappear just like that? Like magic? 

The Bitter truth.

You are not going to find a fully free charting tool out there. All the ones I know have the free version and the paid versions. I have used all of them but no beats Tradingview when it comes to full functionality and running/creating trading strategy scripts plus back testing.

But some have features that tradingview may not have or may need you to first pay.

1. coinalyze.net
2. messari.io
3. aicoin.cn
4. cryptowat.ch

Who knows? Maybe he meant merit trading bots  

Worse still, he had to create a full topic in Meta about it as though the issue was about bitcointalk forum instead of just getting it on the Notification bot's official thread. Had OP read through the past few pages of the official thread, this topic wouldn't have been necessary.

Bitcointalk username: Bitcoin_Arena

First impression
I love the fact that the site loads fast both on the clearnet and Tor mirror. This is a huge positive. We have a lot of mixers using Cloud-flare and the loading plus captcha challenges as one just tried to visit the site can be quite annoying.

User Interface and Homepage
The UI is nice on both light and dark themes, but the home page could do better with less clutter of information or articles. Most of the information is repetitive, for example, The home page already has two links to the blog and FAQ both at the top and the bottom, so there’s no need to add FAQs or the blogs in the body of the homepage. This makes scrolling to obtain vital details such as the official Bitcoin address and Tor mirror hard. In fact, such details should put somewhere more visible and not hidden at the bottom where one has to scroll a whooping 14 pages down in order to see the bottom. It should be around 2 pages maximum.

DDoS protection service
The service uses DDoS Guard to protect itself against DDoS attacks, which can turn out to be a loophole in the future for a service that promises its customers ultimate privacy. With the dangers DDoS Guard could pose, I think you should look for alternative ways. Better safe than sorry.

Support for different languages
The support for other available languages is pretty good, except for the Terms and Privacy. Whenever I clicked on the terms and privacy while in using another language like Russian or French, the page would automatically revert to the homepage in English. A customer need to clearly understand the terms before they use the service, so how is a Chinese supposed to understand English?

Terms and Privacy
I noticed something rather peculiar about your terms

How are you going to determine where the transactions come from? Are you going to involve KYC? Chainalysis? Of course the question is rhetorical, but you get my point.

This feels discomforting, especially coming from a coin mixer that promises absolute anonymity.

Why?

Mixing Process
The mixing page is simplified with pop up definitions or descriptions of each component. The anonymizing meter and fee calculator are a great addition, however the Transaction fee for each receiving Bitcoin address seems to be a little too high.
I noticed that the Bitcoin transaction fees for the transactions to the target are over paid almost all the time

Here are the transaction fees to my target address after the second mixing session today


How about you make that fee dynamic based on the state of the mempool. Let the fee estimator look like that of some popular wallets out there, such as electrum.

I intentionally repeated one of the addresses when entering them on the order details page and on trying to proceed, the continue button was grayed out.
To make it easier for the user to figure out what the problem could be, there should be a small note below the repeated address space.

On the next page, which is one for Order Overview, The letter of guarantee downloaded checks out and can be fully verified. Bitcoin.com is anti Bitcoin and not the Best Bitcoin signature verifier out there. Please suggest something better like Electrum wallet, Sparrow wallet etc

When mixing using the different languages available, I noticed that the Letter of Guarantee is still signed in English.
How about you take it a step further ahead of your competition by providing letters of guarantee depending on the language set by the user when trying to mix.

I mixed two times, but let just point out the results of my second time of mixing. The time range was low, but I was disappointed on how the mixer used change addresses to fund both my target addresses

These were my target addresses.
1. bc1q660842ggcj3gtn20px09u3vxr584gj9h98n68j
2. bc1qltlptzcnvh8apnspue0a7w7hd7p8sa7u424vgl
Notice how the previous change address is used to fund my next address. If I had used 10 addresses, I guess the same thing would have happened. I have no good knowledge of some visualization tools, but this would be a piece of pie for the deanonymization experts.



I also intentionally left the order page time to run out past 24 hours, and nothing else changed apart from the timer.



Once the 24 hours have passed, this order page should expire or the deposit address should be hidden if it has not received any deposit with instructions to the user to start the mixing process afresh

Refreshing it bring this error message, which is persistent. Please fix


Support/Communications channels
The support option is integrated within the site, which could be disadvantageous to customers in case the website goes offline. They will be no way customers can get in touch with you, so you could also include an email option, maybe ProtonMail

Twitter is not necessary, maybe a social network that is more into privacy.

Conclusion
The whole mixing process was smooth and with improvements on the service, it will be an anonymizing service worth paying for. I am not really satisfied with how the coins are mixed and can easily help the Chainalysis experts or services connect the dots without much effort.

Nansen that recently admitted that some of their customer data was leaked?

Those who care to know. 3 commas had an API Key leak where some of its customers lost funds due to a breach. "fool me once, shame on you; fool me twice, shame on me"

Not sure about Bitget, but please try and check out MEXC, that is if their promotion is still open.

They are offering zero spot trading fee for a limited time. This has been on since somewhere in April. This is some huge number of months to offer zero trading fees up to date... read through  - https://www.mexc.com/learn/article/17827791509403

For your case. Not a chance.


Bounty cheater... Chatbot text spammer... Seriously, how is that an unintended mistake? You clearly know what you were doing. There's no going back.

One of the worst "noncustodial" wallets. If I recall well, I think I tried testing it a while back by creating an account without an internet connection and failed, I had to even delete it off my phone.
I would rather opt for an individual open source noncustodial wallet like metamask.

I was going to try my GitHub account but then...



Apart from GitHub, the airdrop seems to favor whales who have staked large amounts of tokens and those with very high activity in their addresses across the 3 different chains.
Good luck to the successful ones