I found your transaction.
As stated by o_e_l_e_o, it's not invalid. None of inputs have been double-spent.
I just accelerated your transaction using ViaBtc Accelerator. There's a chance your transaction will be confirmed in a few hours.

No.
It's recommended to hold your coins in segwit addresses to pay lower fee when you make a transaction. As your fund is now in a legacy address (an address starting with 1), there is no way to benefit the discount.
From now on, try to use segwit addresses for holding your bitcoin.

There are two types of segwit addresses.
1. Native segwit (Bech32): addresses starting with bc1
2. Nested segwit (P2SH): addresses starting with 3*

*Just note that not all addresses starting with 3 are segwit. Multisig addresses start with 3 as well.

You can change the amount by adding more UTXO(s) or removing UTXO(s).

Let's say the original transaction is as follows.

Input A -------> Output A
Input B              

This transaction can be replaced by following transactions.

Input A -------> Output B  (higher fee)


Input A
Input B -------> Output B  (higher fee)
Input C


Input A -------> Output B  (higher fee)
Input C

The chance of hitting 10,000 is not 1 in 10,000. That's 0.5 in 10,000.
Every time you play free roll, some calculations are done and a decimal number between 0 and 10,000 is obtained. The decimal number is rounded to the nearest integer.
For hitting 10,000, the decimal number needs to be between 9,999.50 and 10,000.

The chance of never hitting 10,000 in 10,000 rolls is (1- 0.00005)^10,000 = 0.607 = 60.7%

The chance of  hitting 10,000 at least one time in 10,000 rolls is 1 - 60.7 = 39.3%

Correct. The probability of winning the 200 dollar prize in 10,000 rolls is only 39.3%

1- (1- (^0.5/_10,000))^10,0000 = 0.393 = 39.3%

I tested that.
I generated a seed phrase using bitcoin.com wallet and imported it into electrum. I got same addresses without any trouble.
The derivation path is m/44'/0'/0'.

5.97% 7-day APY means that you will receive 5.97% profit annually and the interest is paid every 7 days.

The profit you will get every 7 days:

(1.0597)^{(7/₃₆₅)} - 1 = 0.00111 = 0.111%



$0.666

I just installed bitcoin.com wallet on an android phone just to see how it works.
It does generate BIP39 seed phrase.

Below is the seed I just generated using bitcoin.com

---

Yes.
And check "legacy (p2pkh)" in the next step.

First of all let me assure you that there's nothing to worry about in the case you have sent the fund to the correct address. You can recover your bitcoin, even without any need to bitcoin core and having the whole blockchain. 
If you have sent the fund to correct address, you can export the private key of the address you sent the fund to and import it into another wallet like electrum.


Now let's go to zero balance issue.
Does bitcoin core run when you open Armory? Does Armory says "connected" at bottom right corner of the window? Or it says "Node offline"?
Perhaps, Armory isn't connected to bitcoin core properly.

You can't find a wallet being able to receive 1 satoshi. Nodes don't allow that.

The minimum amount of bitcoin you can send is 547 satoshi.
Any transaction including outputs worth less than 547 satoshi is considered as dust and is rejected by nodes.
The purpose of this limitation is to prevent attackers from spamming the network.

Are you sure that you haven't already claimed that free spin?

The "This free spin has expired..." message is displayed in two cases.
    1. You click on the banner more than 48 hours after you receive the email.
    2. You have already claimed the free spin.

Click on "Multiply BTC" at top of the page and scroll down to see your roll history. Check time of the last WOF you played.

3MxaTKLroUitGF8yftF5VQTEsdtm26xb3Z is your change address. This means that the address is used for receiving the remaining balance of selected UTXOs.

Let's say you have received 1 BTC in a transaction and you want to send 0.4 BTC to address A.
You can't send the 0.4 BTC without touching the other 0.6 BTC. Therefore, your wallet sends 0.4 BTC to address A and sends 0.6 BTC (- fee) to your change address.
Note that you own 3MxaTKLroUitGF8yftF5VQTEsdtm26xb3Z as well.

You can use jochen-hoenicke website to check the fees on Litecoin blockchain.
As shown in the past week graph, total size of unconfirmed transactions paying 0.00000001 LTC /byte has always been less than 1 MB.

Yes, using a non-custodial wallet, you can pay only 0.00000001 LTC/byte as transaction fee and get confirmation in the next block
A transaction with 1 input and 2 outputs is only 217 bytes. So, it's possible to get a very fast confirmation with paying only 0.00000217 LTC = 0.0005 dollar.  
The transaction fee can be even lower if you use segwit addresses (addresses starting with M).

The general rule is that, for implementing CPFP, you need to have control over one of outputs of the unconfirmed transaction.
If you you send the entire balance of inputs to another person, you can't implement CPFP.
If you don't send the entire balance, your transaction will include a change address and you will be able to implement CPFP.

Let's say you send bitcoin from address A to address B. (You have control over address A and have no control over address B)
If you haven't sent the total balance, your transaction will be as follows.

Address A -----> Address B
                         Address C

Where address C is your change address and contains the remaining balance of address A.

CPPF can be implemented by owner of address B and owner of address C (you).

Both tokens you were trying to withdraw (BAT and USDT) are ERC20 tokens. This means that that don't have their own blockchain and are running on ethereum blockchain.
Sending an ERC20 token is even more expensive than sending Ethereum. Because the transaction needs to spend more gas due to larger size of data.


I just visited Bilaxy to check networks they support for withdrawing USDT. They support Tron network as well.
For withdrawing USDT on Tron network, you must select "TRC20" option.
The fee they get for withdrawing USDT on Tron network is 2 USDT and the minimum withdrawal amount is 5 USDT.

No need to deposit. You automatically enter the lottery.
Click on "more" at top of the page and then select "Lottery" to see number of your tickets.

Click on "Premium" and scroll down. You can see all the benefits on a table under "Premium Benefits Estimator"

PSG vs Chelsea?
The last time Chelsea and PSG played against each other was about 5 years ago in 2015-16 champions league.
The last game of Chelsea was against Porto and the last game of PSG was against Bayern. Both games have been ended and prizes have been given to winners.

If you want to know the exact amount of bitcoin you deposited so far, you can check that on the website.
To do so, click on "More" at top of the page. Select "Stats" and then click on "Personal Stats"

By disconnecting your internet, you don't really make your wallet more secure.
It's advisable to run electrum on an air-gapped computer. This means that you should use a computer which has always been offline and will never get online.