The Trade Desk VS. Animate html5 banner ad creative

Hello everyone, I am plublishing html5 banner creative for The Trade Desk.

And it' been difficutlt, and the vendor I am dealing with has no specs, no setup/publishing information, ablsotlutly nothing to help me. This vendor has jumped me though hoops trying to get this work approved to no avail. They can tell me its wrong, but they can't tell me or even point me in the right direction to make it right.

Can anyone help me with a publishing template or any information on how to do html5 ad creative for "The Trade Desk" ??