@msand
Generally, the 14.11 error indicates a problem with the internet connection.
A little vague and deceptive though because if the device has a network issue, it will inevitably have an internet connection issue.
Try switching/connecting to a different band of your network. If you are currently using the 5ghz band, try using the 2.4ghz band (or vice-versa). Make sure to name your two bands differently in the TMobile gateway so you know which one you are connecting to.
If your RokuTV has an ethernet port, you could also try an ethernet connection. If the distance makes it impractical to use an ethernet cable, you could try an extender/access point or a powerline adapter. (all these provide an avenue to get a device closer to the TV (while connected to your router) to make use of a shorter ethernet cable.)
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
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