Hello,
You username doesn't have any license tied. Please send to contact[at]phpdocx.com the username or email of the user that purchased the license you are using.
About your question, there's no option in the current stable release of addChart to delete (hide) the numbers used in the axis (some chart types support using showValue to hide them). The current testing version of phpdocx includes a new option to delete (hide) these numbers used in the radart axis; it will be included in the next stable release of phpdocx (there's no release date).
If you write a message to contact[at]phpdocx.com we can send the class update and a sample using it.
Regards.