You are the 23rd 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.
Due to the very high number of similar questions it suggests that you are not familiar with the modern search faculties on the internet. May I suggest that you ask around for some tutoring. In my experience the better knowledge of these things are over 27 years of age although those younger will tell you otherwise.
Neil S
November 2013