It's our understanding that regardless of which older version of TV we use, any later version will still remotely connect to the older version. As we understand it the reverse is not true, i.e., that remote connections from old to new will fail.
We're using 15.13 to connect to 14.2, and receiving this message:
Before Christmas 2020, we were able to connect to this machine with no problems.
Any advice is appreciated.