Acquire some bitcoins through a cryptocurrency exchange, or through a Bitcoin ATM, and use that to buy whatever you're looking for. The risk is just way too high to accept PP, especially from a Newbie with no reputation, if you do actually manage to find anyone willing accept payment via PP from you, it's probably going to be another Newbie.
I would say be cautious about this as well. There are plenty of scams where there are no goods and your coins disappear.
OP, It's not clear if you offered to pay with BTC when you approached escrow, or if you wanted to use PP with escrow - that will never happen.
WTB Hetzner Cloud Accounts is this the goods you are trying to buy? If you give us more details people might be able to provide you with a course of action.