Ask for assistance?

Hey guys I'm very new here so I apologise if this is a misuse of the forum. I'm in my first campaign and I'm playing a Cleric. I'm currently 5th level. The PHB tells me that I should know four cantrips, but I can't find a way for the character sheet to agree. It perpetually says I have no cantrips. Is there something I'm doing wrong? Thanks in advance for any support.

Cantrips don't use spell slots so you can add as many or as little as you like/are allowed. Use the + button under cantrips and add the ones you know as you would for any other spell level.

Awesome Ziechael, thank you!