Device does not automatically reconnect to CXA81 using Roon Bridge for Raspberry Pi

Then why not use the search to find other users solution, instead of creating a new thread for the same question again? Search results for 'CXA81' - Roon Labs Community

In short: Don’t put the CXA81 into standby if you want UAC2 else set it to UAC1 mode. Demand from Cambridge that they fix their broken/incompatible UAC2 implementation.