There is nothing we can do. For sure the law and security prevails on all our arguments.
Either the customer provides to us, or to the authorities, his/her Id or we will have to wait forever. Also, let's assume we will release the coins, without following the rules.... the same person could come back to us claiming a hack and sue us for negligence...... I wouldn't be surprise.....
Believe me, I'm the first one that would like to see this saga ending and close the account.....
Isn't strange he/she threatening us to go to the authorities, talking about jail sentences etc. and non acting accordingly?

?
Quite strange I would say.... or,normal if he/she is not the account owner....
I still hope this is not the case but, so far, everything is pointing in that direction.....Will see....
The same person would not come back and say "hack". Your post is very condescending, it seems very clear you are deliberately putting obstacles in the way just to antagonise the OP.
That is same attitude the OP can show you and say that after receiving his ID you will still not release his funds.
I expected better from you. If you are a professional business you should have ended this issue 11 months ago. the OP has suffered enough. You could easily allow him to login to his account and withdraw his crypto over a period of 3 or 4 days.
Your arguments about KYC and law are out of context in this particular case and appear to be used by you as an excuse to get revenge against the OP and nothing else.