Roku 3 is not working with YouTube

Heyartfo, 

Thanks for sharing your network issue here!

Could you please provide the following information?

• Did we recently make any changes to your network or network provider?
• What error message/code are you getting after trying to connect to your network? (after entering the network credentials)
• Do you have cellular data so we can try connecting your device to your hotspot?

 I await your response!

Thanks,
Roku Community Team

Sometimes I had issues like this. When I do it is most likely my router is blinking and not working or the Roku is overheating.  Usually I go to settings then system and then system restart usually that helps.  Is it hardwired or are you using Wi-Fi. If it is Wi-Fi use your cell phone as a hotspot and see if you can connect that way. The few times I had issues like this and nothing worked I did a factory reset, but first do a soft or hard reset and good luck