If you remember the wrong email address you used for registration, change the registration email on your own by using this service https://products.drweb.com/register/change_email/.
If you do not remember the wrong email:
- Contact technical support (https://support.drweb.com) and provide a proof confirming you are the legal owner of the license (a photo or a scanned copy of the license certificate, the payment receipt, an email from the online store, or other confirming documents).
- Change the registration email with this service https://products.drweb.com/register/change_email/.