I started testing with a free account of NOZBE and Since i am an Iphone user, installed the application on my Iphone. After changing the password in the webinterface of Nozbe my Iphone didn’t sync anymore because of the password mismatch.
On my iphone I couldn’t find the screen where I could change of enter my username and or password, so I started googling for it. After somewhate more then 10 minutes the answer was clear. Currenlty you can’t change your password on the Iphone. It is documented in the forum.