Yup, in the same boat. Outlined the entire issue with Avalara yesterday, got back boilerplate response saying follow QuickBooks instructions. Followed all instructions, still stuck at revoked certificate. Zero help from either side and now Avalara is just putting their head in the sand. No further response after I told them to re-read my support notes and respond to the actual situation, not just "can't find Avatax." Quickbooks CAN find Avatax, it just won't accept a revoked certificate.

On top of that, I can't even uninstall/reinstall Avatax since it's "Blocked by administrator" (I'm the admin, and only user on that computer.)