Update:
Dear Trader,
Thank you for your reply.
Kindly note that we have thoroughly checked all the information you've provided, and, unfortunately, it can't be accepted as a valid source of funds report. We will not be able to proceed any further until the actual source of funds of the transaction in question is provided.
Please provide us with an actual source of funds, and we'll be happy to proceed.
Anyone understand what they want? I provided them with a cash withdrawal statement, a statement from work with annual income. They write in riddles without explaining what they want.
I think they want a crypto source - the wallet you got it from or the exchange. Anyway, good luck with that, their KYC may be strict at some extent, but you just need to read carefully not to miss any directions. At some point I thought they won't verify me, but it turned out fine in the end.
Good luck to you!