I use a Samsung S21 Ultra, and my KLCK stopped showing ontop of the default lock screen. I haven't made any edits nor were there any updates. I made sure to look through permisssions again and Always on top is allowed, all permissions are allowed, battery saver mode is off, lock screen option is on in the KLCK app.
This happened last week, and a few days ago KLCK would still show on the first time I lock my screen after restart, now it just never shows even after restart. Tried loading basic presets to see if my preset was broken, that still didn't work.