CD login uses a unique email address for each membership. You can not use the same email address for another membership, your partner may have already registered using a shared email address.
If you have forgotten your password, enter your email address at http://haus-einrichten.info/forgot-password and follow the steps to update your password.
If you do not receive this email, check your junk mail.
If you are advised that the email address is not in use try another known email address, or us and we will reset your email and password at a database level.