I recently also transfer some EUR funds to my IBKR (Tradestation Global) and after 2 weeks putting the funds "on hold"... they just rejected it and returned the EUR funds to Transferwise.

Apparently IBKR sent me few "secure message", but i can't seems to open those so called message. The page just says " The application is currently down for maintenance. Please try again later. "

Now need to figure out how to claim back such funds from Transferwise