license key problem

i am adding the licence key but getting the following error
Last time we checked the token we were not able to connected to Envato:

Purchases could not be accessed
Username could not be accessed (needed for your information only)
E-Mail could not be accessed (needed for your information only)
Following errors occured:

Purchases: Your private token is invalid.
username Your private token is invalid.
email Your private token is invalid.
Purchases: A problem occured accessing your purchases. Unable to check for updates.