I can't activate

When activating Read&Write for Mac (6) if you have previously installed and reinstalled the software the activation may have been used up. If you receive the error message Activation Failed, Please contact Texthelp for assistance. Error Code, no activations remaining 

Read&Write Activation failed window

If you receive this error please contact us with your serial number.

Please note: If you have purchased a single user license, it should only be installed on one machine.