@Agrippah Have you checked Twonky to see if they are still on the list of Media Receivers and have you tried a Reset List? See example image below. My Sony TV is highlighted in yellow.
I checked the IP of the “generic” listed. It is my Samsung phone. None of the TV’s appear when I switch them on. I have not recieved an update as of late. One is a Samsung Serif and haven’t had an update for a year I think.
I highly recommend to open a support case with us then we will be able to troubleshoot the issue and help you to sort the problem out. Please make sure to attach the My Cloud Logs to the case.