Any time I try to add a channel to my Roku TV, it just loads forever and the channel doesn't get added. I have no idea what's going wrong. We recently moved and the TV just got set up last night. I can navigate the Roku menu and other features of the TV have been working, but I've tried adding two separate channels to no avail. If I can get any assistance, that would be appreciated. If it's necessary, we tested ABC and PBS kids and we live in the U.S.