Home Internet Port Forwarding

I previously had Spectrum internet using a mesh network router system like the Eero (but the I have bought in 2014 called a Luma is no longer in business.  I use it with a TabloTV device to view my antenna TV remotely when we travel.  I switched to T-Mobile home internet in January and all is good except I can no longer remotely access my TabloTV.  The Port forwarding settings that I have used for 10 years when I had Spectrum no longer work.  I assume the T-Mobile home internet is the culprit but don't see a way to solve the problem, any one have an success using TabloTV remotely?