- Plesk for Linux
- Plesk for Windows
The Web Pro or Web Admin Plesk edition is used which have no resellers or/and customers management corresponding.
The User accounts (resellers and customers) directive has the Unlimited value at the Plesk > Tools & Settings > License Management page.
It is the Plesk bug #PPPM-10510 which will be fixed in future product updates.
Until the bug is resolved, ignore incorrect information.