Netflix no longer streaming

I know that this thread is a couple of months old now, but I just started having this problem. I can no longer successfully load Netflix on any of my Smart TVs or STBs (various Fire devices). I get error tvq-st-106 when I try. I poder load the app on my iPhone and PC, and I can stream content. But, no thumbnails appear.

This just started happening on 2/9/2023. I have spent considerable time with both Netflix and T-Mobile support, but have not made any progress toward resolving the issue.

Does anyone have any ideas on what I can try? Is anyone else seeing this issue again?

¡Gracias!