Invalid transaction params: params specify an EIP-1559 trans

I just came of a support call with polygon support who confirmed to me that i should be able to finally TRANSFER my funds from POLY which is turning into a seriously shitty chain as you can not take your funds out.

it now tells me despite numerous confirmations from support including higher management

Invalid transaction params: params specify an EIP-1559 trans

I JUST WANT MY MONEY.