BetterSnapTool 1.9.8 will not work on macOS Catalina Version 10.15.7 iMac Late 2013 with Magic Mouse.
The hard drive went out on my iMac late 2013 and I had it replaced a few months ago. After that my BetterSnapTool 1.9.8 no longer snaps at the corners. I compared settings with my MacBook Pro where BetterSnapTool works perfectly and have restarted the computer etc but haven no snapping.
BetterSnapTool 1.9.8 will not work on macOS Catalina Version 10.15.7 iMac Late 2013 with Magic Mouse
Try quit BetterSnapTool, then go to System Preferences => Security & Privacy => Privacy => Accessibility. Then remove BetterSnapTool from the list using the minus button. Afterwards add it again manually. Sometimes the macOS permissions database breaks when doing things like replacing hard drives, this usually fixes it.
Thank you for responding. I did remove BetterSnapTool from the list and added it again as suggested. Unfortunately, that did not fix the problem. I restarted the computer and went through shut down as well just to see if that would do it but still not working.
