The remote has been working perfectly for years. Today, everything still works except for the up and down button for channels. Instead of flipping through the channels it instead just brings up the channel information box at the bottom - so it'll just bring up the small box on the bottom of the screen with the channel number, show name, description, and time. If I press in 550 it'll go to channel 550. If i'm on 549 and press channel up it'll stay on 549 and bring the information up for channel 549.
It never did this before and multiple remotes are doing it on the same tv so it's not the remote.
Any ideas?
Edit to add: It turns out that ALL of my boxes are doing this. I also can't press UP or DOWN on the box itself to change the channel. It is not a tv nor remote thing.