When you log in to the support system here http://support.dhtmlx.com/, please use the email address, which was used for payment registration, and your reference number.
You can find the ref. number (license number) in the email that you received right after the purchase and that contained the download link to the purchased component(s).
If you would like to add other emails/users to your support account, please contact us by email and provide the following information:
- original email address (email that was used while purchasing the license),
- license number,
- email address and name of a new contact person.
Please note that only users with active support period will have the access to the Support System.