@Joseph-TP Hi, DNS has been changed (no impact from doing so). Device Isolation is not enabled at all and even if I turn it on, there is nothing in the list. AP Isolation button is not enabled. Not...

@Joseph-TP Sadly not. I literally don't know what else to try!

@Sultan_Hassan Oddly I can now seemingly Ping the IP address of the Alarm device from my main PC (wired) but still not from the router itself. Traceroute does not work either from the router but it...

@Joseph-TP May I know what is the model of the Alarm IP module? The alarm IP module was replaced (as the old one was suspected faulty). I can't seem to post the link so image below. It can be found...

I did wonder if HomeSheild was somehow interfering but I couldn't see any option to turn it off! I have no Parental Controls set either.

I could indeed but I am not happy using the BT SmartHub as the primary router to control network traffic, I just don't think it's up to the job and doesn't give sufficient control. It's been fine as...