Can`t add or delete user

Can`t add or delete user

Hello, please help! can`t delete or add users to my organization via control panel, no active button(screenshot attached). Was able to add users via mobile application Zmailadmin but after I had reached 10 users it tells me that max user license limit reached please upgrade. And when I am clicking on upgrade button it redirects here https://mail.zoho.eu/cpanel/null (screenshot attached). And I can`t delete any user.
Also, no active button to customize organization logo (screen attached)
Thank you in advance

      • Sticky Posts

      • How to Add Users to your Organization in ZohoMail?

        A better clarity so you can create other users to start using Zoho Mail. You can directly Add Users from the Control Panel to your Organization. You can invite users with the existing email address. If the person (user) already uses ZohoCRM, then you can import users from Zoho CRM. You can also import them using a .csv file. (if you are planning to add them in Bulk)  In this topic, We will be discussing on how to Add and Invite users only.  The Import options are self explanatory. ____________________________________________________________________________________________________________