I set up a community account to look for an answer for another issue and it lists my device as the Roku stick. I don't have that on my account anymore. I habe the Roku Ultra and a Roku TV, and neither are showing and I can't add them. Doesn't really instill confidence that the system has not updated in 3 years. I got rid of the Roku Stick in 2018.
I think you're stuck with whatever products you indicated when setting up the account. Mine are 'way out of date too and I've not found a way to change them. I just rely on listing my current Rokus in my signature.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X