I'm going to have a complete guess at your question, which I guess is "how do you turn the adult filter off"
-Go here https://giffgaff.com/profile/phone-settings
-Click "change" next to "Allow Adult Content on Phone"
-You will then have to enter either a UK passport or a UK driving licence details, to check you're 18
-In under 24 hours, you should be able to access adult material. Try rebooting your phone if it's not working.
Hope I answered your question 🙂