You will have to register for an account to purchase. In the event you agree to register an account, you will receive a username and password upon providing registration information and successfully completing the registration process. You are responsible for maintaining the confidentiality of your username and password and are fully responsible for all activities that occur under your username and password.
You can edit all your account information in Account Settings
Try reset your password on the login page then, if that does not work, email to email@example.com
https://modernsmartdevices.com may refuse to grant a particular username to you for any reason, including, without limitation, in the event https://modernsmartdevices.com determines that such username impersonates someone else, is protected by trademark or other proprietary right.