Received a letter from UPWORK, what is it?

Question

Upwork

The following letter has arrived:

spoiler

Thanks so much for responding. In order to fully restore your account, I’ll need to verify your identity. Please note that your account will remain on hold until you have provided us with the information requested below.
We want you back up and running as quickly as possible. Once you click on the link you’ll see the documentation we need and learn how to upload it securely so we can review it.
This link will take you to our verification portal: ***
Please review the instructions located on the verification page carefully. It’s important that you send the specific documents we’re asking for. Following a successful verification, we’ll be able to restore full functionality on your account.
While this hold is in place, you won’t be able to submit proposals or withdraw payments on Upwork.
Thank you for your patience and understanding while we verify your account. Please feel free to reply to my email if you have any questions regarding the next steps.

Help me understand what exactly they want from me. I can't follow the link because they have already written to me that I use the account exclusively from the computer from which I registered on the site. Once again, and block my account. This is not wanted. Therefore, I ask you to help. Maybe someone has come across this. They ask me for my card number and payment document. I don’t know what they didn’t like about my video verification, which I already passed. I can not understand what exactly I should throw off to them, please help.
PS My account was put on hold just because I used my account from different computers. And they are asking for it.

Answer 1

Follow the link, everything should be written there what documents you need to provide.