Hi. Yes I am. I did some research and found that Coinbase had an account on Reddit where they provided support. So I signed up and filed the issue.
In the meantime, this progressed and I was emailed my case ID number. Now I'm waiting for everything to unlock or, at least, to be given the opportunity to withdraw. I understand that a website should take appropriate measures to avoid fraud or anything else, but blocking your account without notifying you or at least informing you of the reasons, I don't find it very fair. I've always used Coinbase without problems, made a lot of transactions, deposits, withdrawals, exchanges. We'll see. I wish you all a happy Sunday, and thanks again for your support.