This article addresses the problems with Afi Backup for Office 365 installation. In case of problems with Afi Backup for G Suite installation please refer to the following article.
After Afi application has been installed, it might take up to 24 hours before access rights are propagated and application starts working properly. During this time the application shows the following message - "After application is installed it may take up to 24 hours before access is granted to the application. This page will be automatically refreshed to check the access".
If for any reason Afi application doesn't start working properly after 24 hours please re-grant administrator consent for the application by clicking Install button and following the consent dialogue again.