I have a Roku XS. When I try to add the Discovery Plus Channel, I get a message saying "can't add Discovery Plus Channel - error". What am I doing wrong or is my Roku too old??
The Roku 2XS (3100X)? That is on Roku's list of "Legacy" models that are no longer updated. So that may be the problem especially for a a new channel like Discovery Plus.
Definitely the problem. The Roku 2 XS is ancient and won't support any of the new channels.