If you have yet to update your Tor address from v2 to v3 please consider doing so as soon as possible as otherwise you will not be able to make or take offers: Changing your onion address - Bisq Wiki
Also see video here for more info Bisq Demo Session, Episode 2: Tor v3 + Dispute Resolution - YouTube
If you are currently using the old Tor address with 16 characters your offers may not be displayed
Make sure you only upgrade when you do not have any offers in progress, meditations or arbitration open as upgrading will give you a new Tor Address and make you unable to continue existing conversations.
If you are unsure if you are using a Tor v2 or Tor v3 please see: Changing your onion address - Bisq Wiki