Hi
@Cypher,
Sorry about this, but I am not sure I understand your question. Forgive me if I am wrong in my response.
If you are using a different device profile for your computers and you have not enabled ad blocking on them, you will not be blocking ads - but your phone will. You should enable ad blocking on the device profiles for your computer.
I think the blockads.fivefilters.org would be checking to see if you have an adblocker addon installed. I am not sure about this, but it seems like that's what would be the case. I ran the test now and I got a message saying "Only partial blocking detected". I would assume it is testing to see if certain things will load and when they fail it knows something is blocking things, but not what.
Since it is done via your VPN's DNS it won't be able to know if there is a blocker enabled or not.
I hope I understood this right. If not please let me know.
Regards,
Peter @ Oeck.