Catch-up is used to go back to something previously aired and watch it. This is something that we offer on some channels. Simply click on the channel and press left on your selection button and hold it down, it will scroll back in time so you can find older programs.
First you will have to go to Settings/Playlists, click on your playlist and scroll down to Catch-up and turn it on. There are 3 "type" options, you may need to test these to see what works best for you or just set it to auto and let TiviMate find the type for you. There's also a duration in days option, just realize, the more days you choose the bigger your TiviMate file will be thus taking up storage on your device. Start by just setting it to 1 day. Go to a catch-up channel and scroll back to a past program and see if it plays, there's really no need to save the EPG past the days the catch-up will play.
NOTE: Your playlist may show the clock (indicating the channel has catch-up), but it still may not work. This is our issue not the App. You can try changing the Catch-up type or Switch between MPEG-TS and HLS.