Here I am again working on the same issue, because this issue has never been resolved.
here is what is new / or I have noticed since the last post.
1) I have added another Roku and I cannot connect to it with the mobile app and I cannot ping it either from the CMD prompt.
2) the mobile app does not see it on the network (192.168.1.X) and I cannot connect to it manually.
3) on my Roku account page both devices are "linked".
4) again I have deleted the app, rebooted everything.
WHAT AM I DOING WRONG? THIS CAN'T AND SHOULD NOT BE THIS HARD!!!
