DTube: "Error Private Posting Key is wrong"

Hello everyone,
today I decided to have a look into the new steemit-based video platform DTube and to upload some content.
I generated a new password for my steemit account just moments ago. The new password is working for steemit obviously but when I try to login to DTube, I keep getting the message "Error Private Posting Key is wrong". The old password isn't working either.
Do I have to wait for a certain time until it will work for DTube?
Any help appreciated.
Thanks!