I think you should let things be as they are and wait.
Normal scan did not let me put procguard.exe to chest, but a boot scan did. So there it stays until avast antivirus database is fixed.
PG works normally, prevents IE or other apps I have not given internet access without asking me. It is just the GUI file that avast flags as a false positive. Without a missing graphic user interface yoy cannot of course go and change the program rights, but basic protection still works
We will see if there are no long term effects like needing to uninstall PG and install or such, but I suspect, the file needs just to be removed back from chest when database is fixed