Export is available on all tariffs, even if the account is locked. If you do not have the "Export" button, it's likely that the account administrator has restricted the rights. For more information, you can contact them.
What rights should a user have to make an export?
These actions can be performed by the Account Administrator or the User, who has the rights to export. The Account Administrator can set up the rights of the User by going to the "Settings" - "Users" section, selecting the right user to disallow or allow, to him to do the export in the necessary entity. Then you need to save all the changes.