Sharing GoodNotes 5 in Family not working

Hi there Not-AnAppleFan,

Welcome to Apple Support Communities. There are certain apps and content that cannot be shared via Family Sharing. This Apple Support article can provide more insight into that for you:

What types of content can I share with my family? - Apple Support

If the app is shareable via Family Sharing, and this issue persists, get in touch with Apple Support for further help:

Get Support

Cheers!

There's an article in Goodnotes Support that addresses your question.

Try https://support.goodnotes.com/hc/en-us/articles/360002214256-Why-is-my-family-still-being-asked-to-upgrade-to-the-full-version-after-I-bought-it-and-enabled-Family-Sharing-