I gave admin rights to two apps I have on my Motorola Moto G5 Plus (Android 7.0): Find My Device; Greenify Automator. The first one I mean to keep it as admin, but I would like to remove Greenify. When I try to do so, it simply won't let me. I try selecting "Deactivate this device administrator" but nothing happens. And nothing happens either if I try selecting "Cancel". It seems like these two buttons are just deactivated. I then also tried doing the same for Find My Device, and it also doesn't work. So I guess it's some kind of bug when removing Device administrators.
Someone know how to solve this?