Changed password for openhabian, does not work for sudo

Hey there,

I installed openHAB 2 on my Raspberry with Openhabian. Then I changed the password for the user “openhabian” as recommended. This also worked, after a reboot I was able to log in.

However, it does not work for sudo under this user, the system tells me: “Sorry, try again”

Any ideas what could possibly be wrong. And can I log in as root if I used the openhabian-image?

Well… now I cannot login anymore… did not change the password… I’m lost…

Kind regards!