Thanks for letting us know, it seems Facebook has indeed deactivated our account 
- unfortunately working with Facebook is really frustrating. We were in contact with them regarding this issue and they told us no further actions was required, then they deactivated our account with providing more information.
Short-Term there is not much we can do, unless waiting for Facebook…
When you are logged in, it’s possible to add an email address to your login. In your user settings here.
When you are not logged in, you can request a password reset email with the email you used for Facebook. You should receive a password reset for this email and be able to log in with the mail in Kurviger.
I will send you an email with some more information. If anyone els is having the same issue, please lt us know.
I am very sorry if you are experiencing issues with this!