I just went through this exact same thing, only 922 channels were added on mine, too many to delete. I came in here looking for my post, can't find it wondering if Tanner the community manager removed it.
Anyhow at this point the best way to help yourself is to do a reset on your device,( this is what I needed to do) make sure when your doing the new set up you don't check ANY boxes, Roku already knows which channels you subscribe to they're all linked to your account already, just hit continue, and make sure when you do the search for Roku your using Google, I was using Bing and I think I may have been to a bogus site I still don't know if this was the case, but Tanner never came up with a reason for this happening just said he hadn't heard of this issue before. I told him he would be hearing of this again.
I'm not a regular user of community boards, and I am not a technician, I am also someone who owns smart tv' s, and had the exact same experience you are now describing( but don't use the smart tv function don't like it) I like you came here for help because Roku no longer offers customer service. I'm surprised Tanner hasn't answered your post? I am electronically literate as I own about 5 or 6 Roku's from Roku2, Roku 3, and the new Premier Roku because my oldest Roku was being made obsolete by Roku. I also own many electronics which I am responsible for maintaining.
Anyhow Tanner as I mentioned before never came up with a valid reason for this happening, his advice to me was to reset my device, I did this because it was impossible to delete 922 channels. What I found was in doing so it gave me a much more simple form of doing the set up. I was able to do it all from my tablet, but as I mentioned using google search was key, also make sure you set up your preference for screen saver, BUT what you may or may not notice under screen saver's there are now so many you can't get to bottom of them, and they are all 'paid for' screen saver's except the few offered by Roku, stick with those.
I was coming back to ask Tanner about all these new 'paid for' screen saver's. I suspect there is something bogus about these, or the way they mysteriously just added right before my eyes, as I was setting up my screen saver option to those only offered by Roku. Also before I did the reset when I tired to buy one of these 'paid for' screen saver's they couldn't install kept getting an error message that it wouldn't install.
Best wishes, I don't understand why Tanner the community board manager isn't replying to your post. I posted the exact same thing two day's ago. Apparently he has removed my post 😕 I can't find it.
