Hi, I too have this problem. My "Enable" option, from the screenshot above, is/was already unchecked.
I have three monitors, all the same resolution, same brand, same model. I am using six Fences on each monitor (three top, three bottom). I have been using this configuration without an issue for some time, until last week.
When I start my computer, one Fences (right monitor, top left Fence) shows up for a brief second but disappears completely from view and is inaccessible. It's not hidden, moved, rolled up, overlapped, etc. It's just not there. I have tried restoring a correct snapshot, and again, it shows up for a brief instant then disappears.
However, I have a discovered a workaround to bring it back, which is to "sign out" of Windows 10 (not restart) and then sign back in. My missing Fence reappears and will stay on my desktop... until I leave my computer and the monitors shut down (black screen). When I return to my pc and move my mouse, my monitors come back on and all my Fences return EXCEPT this one I have a problem with. Once again, I have to sign out of Windows 10 and sign in back to restore my errant Fence.
Is there something I am doing wrong here? Do I need to redo all my Fences from scratch? Uninstall and reinstall? Is there another fix to this, other than signing out and in again (which is inconvenient)? I have not experienced this problem until last week.
I am using Fences 184.108.40.206. Thanks so much for your help!