It sounds like you've reached the user limit for your existing plan.

If you do not have any available Writer and / or Reader users within your account (i.e. the add writer / reader user button isn’t showing) and you wish to add another user, you can either:

1. Delete an existing user. However, it is worth noting that:

• You cannot delete the Account Owner.
• A delete is permanent and cannot be undone. On deleting a user all of their clients, reports and private customisations will be lost.

2. The Account Owner can either:

• Increase the Writer User Limit by upgrading your plan, or
• Purchase another Writer or Reader User license.

To learn how to upgrade your account click here. To purchase another Writer or Reader User license please contact us.