If you are experiencing login blocking issues because you are not a direct member of the group you have access to, nor are you directly assigned access by an administrator. Please contact your administrator to assign access to this application.
1. Go to Azure AD admin center, select Enterprise applications.
2. Select the application that you added for Foxit Admin console and open it.
3. Select Users and groups, click Add user/group to add users
Hope this article can help you. If you still have questions or comments about SSO login, please contact Foxit support(via creating a support ticket) for further assistance. Thank you.