If you switched to or going to switch to a subscription plan with lower limits and, as a result, your account was blocked, this means that you have added more keywords, projects or users than can be included in the new plan. To resolve this issue, you must delete extra keywords/projects/users from your account.
You will find the number of keywords/projects/users that must be removed in the notification, as shown below:
1)   To remove a project, find it under the Projects menu and access Project settings.
Then, click on Delete project under the General information tab.
If you don’t have any available projects under the Projects menu, please contact our support team here or via live chat for assistance.
2)   To remove extra keywords, select a project from the Projects menu, access its Settings and go to the Keywords tab. Next, check-mark the keywords that can be removed and delete them by clicking the Trash icon on the right-hand side.
3) To remove a user, navigate to the Users module via the top right menu
In the Users module, click on the bin icon to delete a user