You are the 22nd person to ask that DTT receiver question on howtomendit this month.
Top Up TV used to broadcast a 14 day programme guide, but permanently ceased broadcasting on 1st November 2013.
You need to change to the freeview 8 day guide.
Menu >> Set-up >> Change your box settings >> TV Guide Type
Use the < > keys to switch to the 8 day freeview guide.
Immediately after changing the setting to the 8 day epg a Top Up TV recorder owner should be patient. It can take a few hours before all the epg is populated without any gaps.
If you still have a card installed then one suggestion elsewhere is to also remove the card.
Good luck.
BTW It's not a "program" guide - in UK English it's a 'programme' guide. In UK English 'program' is the code computers use.
Neil S
November 2013