The account is created with the mobile app. After launching the app, you will see a similar view as above. Tap email and then sign up from the next view.
Your email address will be used for login to the sevice. The username is public and it’s visible for others. Read and accept the terms. When you are ready, tap sign up.
Before you can log in, you must confirm the account. Check your email for the confirmation link. Activate the account within 24 hours by tapping the link in the email. Unactivated accounts are removed automatically.