As I was not familiar with zwift when I started biking I used a pseudonym both for my first and last name.
Can I change those without losing points and levels?
Yes, you can edit your profile here: https://my.zwift.com/profile/edit or within the Zwift App or in the Zwift Companion App.
You will not loss any data, it’s all tied to your email address/account not your user name.
Thank You Paul!
It’s a good idea not to use spaces or blanks (non-visible characters). We see help emails from users all the time who have problems because of this.