It looks like you may have the app optimizations active on your e-ink device. Go to the home page, long press MobileSheetsPro, tap "optimize app" and turn off the optimizations. They cause conflicts with various things in MobileSheetsPro. Let me know if that does not help with this issue. I know this issue was raised once in the past, but it might have been through email, so I'll have to see if I can locate it.
Mike
UPDATE:
I did discuss this with palosanto from the forums, and ultimately could not find any way to fix this header issue. I am using Google's PreferenceActivity code, so I don't have complete control over the formatting of the settings screen or how things function. Nothing I tried would fix the issue (and I tried a lot of different things). The issue does not show up on my BOOX Max 2 Pro either, which made it harder to test.
Mike
UPDATE:
I did discuss this with palosanto from the forums, and ultimately could not find any way to fix this header issue. I am using Google's PreferenceActivity code, so I don't have complete control over the formatting of the settings screen or how things function. Nothing I tried would fix the issue (and I tried a lot of different things). The issue does not show up on my BOOX Max 2 Pro either, which made it harder to test.