To revert, you need to clear the system cache and the Shealth app cache and data.
Lots of threads on how to solve that, you can find lots of elaboration in existing threads if you search.
In short you can have Shealth and Xposed working if you disable secure storage - which breaks private mode, et cetera.
Or you can revert. Basically: Shealth, Xposed, Private mode. Pick any two.