[PROBLEM] No longer able to change I2S device or DT overlay

[Nutul]

After a recent swap of Digi output HAT, I managed to screw up something because now, I am no longer able to change any of the Audio Output settings. It's stuck at I2S audio device and the last incorrect combination of I2S device and DT overlay that was made before I presume a file got corrupted.

No matter which I2S device or DT overlay I select from the pull down lists, the SET buttons no longer become active.

Is there anything I can do outside of a complete reinstall?

Did you by any chance flash a brand new image?
If that's the case, read carefully the installation instructions, as there are some mandatory operations to be done. That is: it is not like it used to be with older installations...