The license does not have any seats available.

All seats of the license have been consumed by other users. A seat must become available in order to add the license to your account.

• Contact your license administrator or person in charge of purchasing the license to obtain more information about the license.
• Verify the email account used to purchase the license. Login with that email account into the license portal and use KB article steps to locate the license and manage/remove seats for the license. 
• Verify your other email accounts that may have been used to consume a seat on this license. Login to the license portal with other possible email accounts and use KB article steps to locate the license and remove seats from the license.