In certain circumstances you will see a message that says "Accept our third party cookie to continue" when trying to use the Canva app from within Book Creator. This message looks like this:
To resolve this issue you will need to click "Allow this cookie".
Sometimes this won't work and you'll be returned to this screen because:
Your browser is in incognito or private mode. In this case please try outside of incognito browsing.
Third-party cookies are blocked by your organization's administrator. In this case please contact your IT department to have them allow the Canva cookie.