Out the box the remote doesn't come paired to the Roku, it has to be paired via pairing button in the battery compartment. And you have to use the supplied usb cable with the bump in the middle, that bump is what the remote and internet communicate with, not the Stick itself.
Edmund Roku Community Streaming Expert
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If you've gotten to the page where you enter your network password, use the arrow keys to move the cursor to highlight the password entry field and press the OK button. This should activate the on screen virtual keyboard.
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