I got it working doing this:No need. Toggling it off and on may help.
Will try to replicate this issue.
" If I set other value than 85%, than the battery protection in Device care is disabled automatically."
- Yes, that's normal. GMH will automatically toggle it when battery charge reaches the set level.
1. I disabled battery protection in both apps (Galaxy Hz and Device care) and enabled it back in Device care only. In Galaxy Hz it was still disabled.
2. I connected the charger but the phone battery level was was already at 88% so it stopped charging saying 85% level was reached.
3. While having the charger connected, I enabled in Galaxy Hz the Battery protection mod and set 90%.
Charging stopped/started at that moment and continued until 90% was reached. Than it stopped saying 85% reached.