You must have done something against their TOS.
Paxful is providing secure platform for exchanging coins and people are tampering their system.
You just need to wait for their reply.
Main reason for account suspension are:
1 . Holding coins for longer time
2. Not replying in active trades and keeping many trades open for longer period of time
3. Duplicate accounts
4. Card brokering
5.Too many reports filed also causes bad impression on the account
7.Sharing personal information in chat box and urging to trade out of escrow
Please use this system with care and honesty.