Like the other users I am having this problem (can try to start PBS app on Roku but it doesn't turn on) even after updating the PBS app and deleting and reinstalling it. I also tried doing a restart of the Roku Ultra but that didn't help. In addition, I unplugged my TCL Roku TV and the replugged it in, but that did'nt resolve the issue.
I can run PBS on my PC on the same router as my TCL Roku tv and Ultra Roku box. No sites are blacklisted on my router.
All other app on my Rokus work fine.
In addition to not being able to run the PBS app on either Roku device, when I search my Roku Ultra for the PBS app it isn't in the menu so I try reinstalling it. I can search and find the PBS app but it doesn't run NOR does it stay in the Roku Ultra menu.
Here is the device info for my Roku units:
The device is a TCL Roku TV model 50S423
Software version 14.0
Hardware ID 7130X
Also:
Roku 4660X - Roku Ultra
Both have most recent software updates applied.
