If you forget your password or user ID, go to the login page. If you can access the email used in the service as a user ID, select Lost password? You will receive an email link with which you can create a new password.
If you have forgotten which email address you used to register or the password reset link does not work, you can register again as a private person at https://sign.visma.net/en/register and then login. The service will remember your login details, enabling you to reset your password.
All documents, rights to various companies and any other information will remain in the system regardless of your registration, but this will enable to you get a new valid email address and password.