"Add User" is not available both in Zoho Mail and Zoho One admin app

"Add User" is not available both in Zoho Mail and Zoho One admin app

Hi,

I can't add new users in Zoho Mail, both inside the ZMail admin panel (screenshot 110) and the Zoho One panel (Screenshot 111). When I go directly on a user to add the Zoho Mail application, I can't find it. (Screenshot 112).

The issue might be because Zoho Mail was open as a free plan before it switched to the Zoho One app. Now my subscription correctly shows Zoho One - 8 licenses ( Screenshot 113).

Please help!