Thank you for the replies. They seem to be a big exchange (volume wise) and no wash trading. The biggest problem was with Prime Trust not responding to their inquiry for such a long time. I only used them because I didn't wish to use my Binance account, to make the tax issue on withdrawal easier, as in my country it is tax free if you hodl for 2+ years. OceanEx helpdesk replies really quickly, that has to be said.
A little update, Prime Trust provided the transfer details today, but the receiving bank (Revolut, and my account with them is in Lithuania) has not received the money. It was wired on March 10th. Revolut failed to track down the funds(it hasn't reached their partner bank and they can't track it farther than that). They say it can take between 3-5 intermediary banks to reach final destination (USA to Lithuania), so the sender now has to track it. I've notified OceanEx and they have forwarded this to Prime Trust. Now I guess another two weeks before Prime Trust replies, as they clearly don't give a crap or are seriously understaffed. They are not a bank, but some sort of financial service provider.
It is very stressful, but ultimately this is a transfer between USA and European Union, so hopefully it can not be lost, I imagine this is highly regulated financial sector. I do kinda regret using Revolut for this to save a few thousand USD on currency conversion fees, compared to using a regular bank in my country, but it is what it is. A lesson for all users if they wish to withdraw to Revolut from the USA - don't. From EU from what i read it works like a charm.