It says “Not enough POL for fees”, but I have plenty of the token

Network fees are always paid in the network's own coin, never in the token you are sending or bidding:

• On Polygon, fees are paid in POL.
• On Ethereum, in ETH.
• On BNB Smart Chain, in BNB.

An account holding only tokens cannot move them. Add a small amount of the network's coin to the same account and try again.