Can I register without a Swedish Personnummer?

Yes ofcourse!
In the first step of your registration when asked if you have a Swedish social security number (Svenskt Personnummer), please choose the option No (Nej) and fill in your date of birth.

In the final step of the registration you’ll be given four additional letters which together with your date of birth will be your username.

It’s important to take note of the full username as it’s required at all future logins.