DVR Not Recording



I've been setting my DVR to record on for different shows and movies and when I check back later in the week, none of the shows have recorded. Not sure what I'm doing wrong! Any help would be appreciated, it's so frustrating because I confirm the recording and everything.
Are you trying to record more than 2 shows at once? I know there's a conflict that can happen at times on Comcast's DVR where it'll just record two set shows and not record a 3rd if it's scheduled to record at the same time.

Some things to try if that's not the case:

Unplug the set-top box, then plug in and restart.

Go to the DVR manager and remove any shows, then add them back in.