If you give them proof of your identity (offer to pass on other documents to prove you are genuine), and explain the situation of your dropshipping.
You can forward them receipts of payments to your drop shipping (paypal statements, bank statements, etc). That should be fine.
It's probably a routine paypal money laundering check that you will have to pass. If all fails, after 180 days they will just mail a cheque to your address of how much you have left in your account. So really, the worst case scenario is a 180 day hold.
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