Here is the latest build with the fixes I mentioned: https://adamdriscollstorage.blob.core.windows.net/universaldashboard-releases/UniversalDashboard.2.3.0.118.zip
If you please try that in your environment and enable UD logging. The log path needs to be somewhere the AppPool user can write to.
Enable-UDLogging -Level Debug -FilePath C:\mylogs
This should give some more information on why the policy may not be invoked. Additionally, if you could post your dashboard script, that would be helpful.
As for the IE\Edge problem, can you open the F12 developer tools to see if you have any errors in there?