I’m having the same issue my tv is stuck in guest mode because it says my pin is invalid. You guys make it really hard to get ahold of someone to fix the issues ... I reset my pin 5 times and it still doesn’t work
Settings/System/ Advanced System Settings/Factory reset. This will remove all the Channels you added and settings and set it to the original state. Its a bit drastic. So try 'system restart' first.
I am having the same problem trying to add Disney+. I have tried the update page twice and still Roku asks me for a pin. I have tried both updating an existing PIN and not requiring a pin.
From what I’ve learned, it may be an issue with smart TVs that use Chromecast. It doesn’t support the Disney Plus channel. The only thing that worked for me was using Apple AirPlay or Screen Mirroring. You have to have an iPhone to do this.