Roku TV No longer connects to Tablo

My Tablo has been connected to three Roku TVs with no problems. Today with no changes to my system it stopped working on one of them. It still works on the others. I tried resetting tablo, unplugging power cord, and uninstalling and reinstalling app. Still won’t work on one tv but works on others. Any ideas?

Reboot your modem and router (aka power cycle it).