Charging Lith Ion battery using Lipo Rider Plus (Charger/Booster) - 5V/2.4A USB Type C

Hi, I am a complete novice to electronics and just trying to help my daughter with a project.

Would anyone please be able to help?

We have connected a LiOn battery to the battery port on the LIpo Rider Plus charger/booster and are trying to charge the battery using full-function header connections, but the battery is not charging.

Does anyone know if this is possible and what we might be doing wrong please?