This topic reminds us not to keep a lot of money on the platforms, just as much as we can trade.
@WHellscryp mentioned that his account was frozen when he deposited some Bitcoin, I think you need to prove the source of your money? There are some reports of accounts frozen due to some deposits related to gambling or money laundering or even coinjoin^[1].
Did you send 0.4 at once? Meaning that you made an unfamiliar payment?
Generally, the support team is the only one who can solve your problem, try to explain it better.

[1] Paxful account was frozen due to coinjoin