I have tried using Chrome and Edge and yeah, clearing all cache and browsing history.
I just did all the resets again, tried setting the Geo-Filter and got this error
RPC error 'ERROR_CMDFAIL': Exec '/usr/bin/geoip -P /dumaos/apps/usr/com.netdumasoftware.geofilter/data/usr/polygon.json -f /tmp/geoip_ipc2' failed with 1
Then this (which I also get a lot of the time)
This Rapp is not loaded yet, please try again in a minute.