The 3500 was one of the two initial Roku Streaming Stick models introduced in 2014. It's had a good run, but technology has moved on and it has now become obsolete. It is incapable of running Roku operating software beyond version 11.0 (current release is 11.5) and many popular channel apps have dropped support for it. It also uses a unique remote that is no longer available, should your current remote finally give up the ghost.
It's time to update to a current model. You'll be astounded how much faster and responsive any of the current models are, compared to a 3500, plus you'll be able to load and run all available channel apps for years to come.
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