In general, there is no reason to use the "Enter new (HUMANOO) ID" option in the settings.
However, there are cases where this may be necessary after a request from HUMANOO, e.g. when switching from a test group to a "real" account.
And this is how it works:
(Just in case you have a tracker connected, please disconnect it first under Challenge > Tracker. This way you can avoid later connection problems with your old account).
1. tap to change the HUMANOO ID on the three bars in the upper left corner (settings) and then on account
2. now tap on "enter new ID
3. enter your new HUMANOO ID - like your old one, it has eight digits and consists of numbers and letters. Tap on "Change HUMANOO ID". 4.
4. you will get a success message - but nothing will change in your account view
5. that's it :-)
If the HUMANOO ID is not valid, the app will automatically show you an error message. In this case, please contact your HUMANOO representative.