There seems to be problems with editing many of the profile fields here: https://www.jazz2online.com/user/edit/

Most changes are never actually saved, the only one that seems to be is the signature field.

I?ve been trying to update my email address, the site seems aware if I don?t enter my current password and submit, however when I do, the new email address is never actually saved.

Likewise with time zone, location and password it seems. I could set a new password by doing a password reset however.