How do I reset the password if I have forgotten it?

Edited

Just tap the "Forgot the password?" button on the start page in the app:

Type in the email that is registered for your account. Please make sure you type it correctly. Then tap on the "Reset Password" button:

After that, please check your inbox – you will receive an email with a link to reset the password. Follow the link to create a new password, and once you’ve done this, use your email and the new password to log in to your account.