Hi Dylan
Thanks for following up with me - I was working on this on Monday.
It is a Firewall issue. I switched from Avast Firewall to Windows Defender & my tablet & PC connect fine with Roon.
I would, though, like to resolve the Avast issue (I have their Premium Security package). I used the guidance I found on Roon forum, but still no joy. Roon Remote output problem - PC/Windows 10 [Resolved - Avast Firewall Adjustments] - #16 by LowKey I suspect the issue may be around how I set the RAAT & Roon rules to get through firewall.
I was going to email Avast to see what they say. Any thoughts you have appreciated.
Thanks
Peter