The app is almost unsafe! Not recommended for use.
I was stolen $ 500 of BTC this morning!
There are three possibilities for BTC being stolen:
1. I was attacked by a hack and my pc got the wallet key. But considering that my desktop wallet has not lost BTC!
2. The official wallet key was leaked by some kind of vulnerability!
3. Official stealing!
Hello!
We are very sorry for that accident.

Now we start to investigate this accident, to find the way how your funds were stolen.
Looks like someone found that wallet key, or the way to open that wallet.
There is no sense for our service, with more than 25 BTC monthly turnover, to steal $500 and destroy our reputation.
Please send us in PM your contacts (email, telegram or other messenger) with details (tx number, deposit time).
We will start investigating immediately. If we can't return your coins, we will compensate it with our funds.