No access to application

I have been shared an application through my gmail account. I have downloaded Zoho creator from the App Store and can log in and access the application on the mobile app using my gmail credentials. However, when I access the Zoho online, and log in with Google, I'm told that "You are not allowed to access this application." There are currently only two users for this application, myself and its creator. The creator can access the application through a browser or the mobile app. She tried logging out of both locations, but that does not affect my ability to get to the application through the browser.

Thanks for any help or suggestions for how to proceed.