What is the purpose of asking for someone's documents if they have already stated that they want to close the account and get their deposit they never used for any betting on the site back?
How do you know that OP has never played on Cloudbet before from other betting accounts?
How do you know where OP is from?
How do you know which country OP was in when he accessed the account or accounts in question?
You don't. I don't either. Check the bolded part I posted above in the quote from OP. Cloudbet probably doesn't either, hence the questions and requests they have. Cloudbet's silence in this whole matter is a negative thing. That's true. But the issue will surely not get resolved without OP doing what Cloudbet has asked for, no matter how unfortunate and unpleasant it is.