If you are trying to add photos but don't see an option from Google Photos or Facebook, you need to ensure your advertising cookies are enabled.
To do so simply scroll to the bottom of the website and click on 'cookie notice'.
- Underneath 'your choices', select 'preference centre', followed by 'modify cookie preferences'.
- Ensure 'advertising' is enabled and click 'confirm my choices'.
Now when you go back to 'add photos' the option for Google photos and Facebook should appear.