Same here. Let me present my story, after opening account this morning.

Please see the transactions below:

I.    transactions.statuses.
    01.03.2019 06:05
    -0.01143765 BTC
    BTC 1
    Monthly fee for account inactivity

II.    transactions.statuses.
    01.02.2019 17:31
    -0.01683235 BTC
    BTC 1
    Monthly fee for account inactivity

III.    Trade
    08.12.2017 15:46
    0.00157 BTC
    BTC 1
    Trading

IV.    Trade
    08.12.2017 15:44
    0.0267 BTC
    BTC 1
    Trading

Trade III and IV occurred in December 2017. And it was a result of deposit of additional funds to the CoinBank.
January and February they charged all my deposit holdings for inactivity.
In year 2017 and 2018 they did not charged my account for inactivity. Now it is zero BTC on my account. They started to make this charge from the beginning of year 2019.
I did not receive any notification regarding future charges.

I strictly recommend to check your funds in CoinsBank.
There is no guaranty that this guys did not put their hands on it without notifications.

Offcourse, Coinsbank cannot be used as a wallet since they may charge all your funds in two month.

COINSBANK is SCAM!