Latest Version of Fences 3.1.3.3 does not work, after installation desktop went blank had roll back to version 3.9.0.11
Lucky for me I had a downloaded older version.
I have latest Windows as of 8/12/21: windows version-10 Pro 64 bit, build Version-21H1, OS build-19043.1165
Windows Feature Experience Pack 120.2212.3530.0
No amount of setting changes would enable Fences. Very buggy release.
Have to stay with older version: Please let us know when it will be fixed.