How to change the Doorbird User

I added my Doorbird doorbell and wrote the user and pw in the form.
Now i wanted to change the user, but i can’t find the way in HA to change these information.

Can anyone help me?

Is there no one who know how i can change the initial settings from integrations?
Same problem is with the weather integration. I set the city and can’t change this now.

Or is this question so simple and i don’t see the answer in front of my eyes?