I also can not open the app on my roku tv or my roku device on another tv. Did all the delete reinstall cache clear garbage. No dice. I believe it started on july 4. Prior to that the app would often exit unexpectedly while viewing content. No other roku app I use has any problems. Motor trend is the problem.
Same here! Tried everything, canceled and resubscribed..finally canceled. Could not get past the promotional page and could not sign in on TV with the ROKU remote. Customer Service was a hot mess..absolutely no help!