Hi Perka1,
Thanks for your first post in the Roku Community!
We appreciate you informing us about the issue you are experiencing with the Tubi channel and all of the troubleshooting you've done.
If the issue persists, you'll need to contact Tubi support to report the problem and request additional assistance. You can reach them here: Help Center (tubitv.com)
Each channel on the Roku platform is built and maintained by the channel provider themselves. If the issue is only with the channel alone, this is a good indication that there is likely an issue within that specific channel that will need to be addressed with an update from the channel publisher.
Thanks again for posting and if you have any other questions or concerns, please let us know.
Best regards,
Mary