I am a total noob so take it for what it is worth.
CEX.IO being one of the oldest around, being in Europe, certainly certified on some level,
a bit expensive but with amazing support and fiat conversion with 2FA actived by default
is in my mind the most trustable.

Okay guys, I did a recording of this mess. I won't take action on twitter and such yet ( laziness I know  ).
But I might if I see more harm done in the future. Please spread the word and link to the video below.
Resolution got downsized, but I hope it's still readable. I just needed to save the assle of setting up media accounts.

End of the "whaleclub.co" adventure
https://streamable.com/xiyb6

Happy trading boyz 

!!! UPDATE !!!

Actually they waited for me to exit the 0.0300 BTC deficit to remoke API keys.

This means I can not make any trade in the webclient either. I can only withdraw what is now left of the balance.
Less than half what I put in, not counting hours or worK...

Let's record the withdrawal on video now and see how deep evil goes there.   

Even my friend suggest they might give the money back which we know they will never do.
So I forgot to thank figmentofmyass for replying to me, it was nice to have someone understand.

I also want to cross-reference the reddit thread :
https://www.reddit.com/r/BitcoinMarkets/comments/6dwlui/whaleclub_beware/
and some more :
http://www.forexpeacearmy.com/forex-reviews/13635/whaleclub-forex-brokers

Hello guys, I have some more news from "whaleclub.co" 

I am learning and improving my skills everyday and because they did so many things right design-wise, I stayed a bit longer.
I made mistakes and lost 80% of my investment while terribly upset and not having learnt the value of waiting confirmation
from the market before commiting to a trade. I also learnt about several market behaviors besides the one I knew well.

Improving my backtesting code, I went on and analyzed some data. They do not offer historical OHLC so the only way is
to plug in their API and build your own bars. You do not have volume information though. Maybe it is because they are a fake
exchange, I do not know.

Yesterday I filed a bug report that their server sent a bunch of null characters after a gap, corrupting the time stamp field.
I made some suggestions in the mail and I also demanded that they treat me better, you know the usual stuff (read above).
Guess what they did ? Obviously they revoked my API keys and I get those messages now :

"No JSON object could be decoded"
"You've been blocked from making API requests"

It is only a matter of time before they forcefully close my account and steal all I have left.
But you know what, it is still the BEST beginner platform by far. It is a shame they can not handle some aspects of the
simplified interface they provide internally. That's probably why they end up seizing people accounts and banning everyone
who criticize or actually give information and useful feedback. Which is actually perplexing...
...considering their reputation by the end of this year will be tarnished greatly.

  I guess they don't care as long as they have the money BTCBTCBTC

Also I can provide a nice picture of someone doing +436% in a single trade for the lulz. 
http://imgur.com/a/cdhwo

I am not quite back to my initial investment, I consider it education money now. Gonna take a few days I guess.
Once there, I will record myself in a video. Potentially live theft of customer bitcoins.
If they do it there will be proof on YouTube. 

BONUS

Okay I can't resist. I gonna screenshot my current position. I lost 0.0300 getting stuck in a short on GOLD at the close yesterday.
Nothing between 23:00 and 00:00, then obviously there was a spike at the open. I didn't know the market was closing and reopening...
Here goes: http://imgur.com/GmFBalt
See you in a few days. Happy trading. 

Some pictures 


The start of the opportunity
After a long silence, something happened. Maybe a lower spread, I don't know but everyone got on the train. Am I the only one punished for it ?


Improving at trading
whaleclub.co website who decided to just steal the gains and erase my subsequent withdrawal from their log.


Withdrawal attempt
After I click on this button, my account gets wiped of more than 1BTC, and the withdrawal does not appear in log, nor is executed in the blockchain.

Hello,

I am quite new to trading, I was lucky to be introduced by a friend of mine.
After doing extensive research I ended up choosing to work with "whaleclub.co" exchange.
Honestly even being far away with noticeable lag, I have to say their website is neat.
Dark background is the default, you have a chat box. You get deposit bonus as a welcome.
And you can also participate in affiliate program. The best part is the web API is done right.
I am a programmer myself and I can tell there is design thought behind this work.
The demo account is easy to use and the turbo system must also be fun, although I didn't try it.
You can see their design philosophy on the website, everything looks neat but they are young.

Being young means nothing is perfect yet, so I worked hard for almost a week on their platform.
Building programs to help me understand how to trade. And man did I understand how to do it right.
There are human qualities that you need to be a successful daytrader : discipline, concentration,
patience, calm and risk management. I am a fast learner at most things but especially maths and
programming. So I ended up investing 0.5 BTC to try my luck at it and learn.

I got burned at first. But then something happened. As I built up my understanding of good
trading signals with the help of my backtesting program, I tested different pairs with low
leverage and size to feel what it is to do it manually. I ended finding a good opportunity and
transformed for a short time my balance from 0.5 to 2 BTC in 3 days flat. I worked day and night
on improving my skill until they decided to do several things :

- They almost tripled the spread, which made my timed entries and exits much harder.
- They wiped my account of my gained 1.5 BTC when I tried to withdraw 1 BTC.
- They blocked me on their chat interface so I am not allowed to complain about them stealing the bitcoins.
- The support never answered for a week despite I gave them tips to improve their service.
- When I choosed URGENT level, I got answer but they act as if nothing happened
   The log of my withdrawal request never appeared on my profile. Only now does it work correctly.
   Obviously it's only 0.01 BTC so they don't need to go and steal it.
- To this day, I have no answer why they don't send notifications when they either increase the spread fee
   and when they decide to prevent you access to chat. I didn't behave incorrectly whatsoever on this chat.

So there you have it folks. If you are a bit smarter than usual and find a good opportunity, people at
"whaleclub.co" will fuck you hard in the ass even though you worked with their web interface for 20 hours a day,
4 days in a row. I needed that money to pay rent for the rest of the year. It's kind of depressing because
it's a website I really liked and wanted to say good things about it, even recommend it to others.
Now I will have to go on social media, or even make a video about what they did to me because too much
is too much. I gave so much money from my transactions already but they have to go and just steal my gainst too.

I can upload my report to show you the reality of what I am accusing them of. But I like to see your reactions first.
Thanks for reading, and be careful if you register an account with them.
The worst part of it is no communication whatsoever. Happy trading.

Regards, X