Got another reply from askgamblers
"Hi,

Our complaint department sent you the notification email to inform you that the complaint had been rejected, including the explanation for that decision. You my or not disagree with it, of course, but the department did not find provided evidence as sufficient and valid enough.
You are more than welcome to address directly to the casino's the relevant licensing authority, in this case that would Curacao http://prntscr.com/gkz7ot
If you click on the link provided, and on the Curacao blue written text you will get the more info on how to get in touch with the licensing authority.

Sincerely,

Stephanie,"

I have tried to make new complaint with more info (but gave them all important before as well) but it was rejected again;/
I don't know why do they don't want to help me, I'll wait for response from bitcasino.io support here before I'll contact Curacao.
@game-protect - why do You say that they have no license? on their site they clearly say that they have license + askgamblers thinks same (IMO).
Thanks