Can not reconnect to wifi

Rachio 3 stopped connecting to my Orbi Mesh after I turned off my ATT router yesterday. Rachio has been running off my Orbi mesh for many months with no issues. Bought the Orbi to be able to get a connection on my Rachio Gen 3. Have read everything on your boards, I have tried everything including setting up a guest network. Factory reset. Error message is “something unexpected occurred. Try again”. I ran RouteThis. Code A868WDZ3.

Any help would be greatly appreciated!! Thanks.

If you have tried known things mentioned on this board I would reach out to our support team for further assistance.