Login with Curl

Modify a not working Curl Script with logs in at a B2B Website. Currently the existing script returns just a blank page and it does not login. The problem is probably a session ID.

The goal of the project is to login and to sync business data. We need only a working login and then will continue by our own.

https://materialverwertungszentrum.volkswagen.de/gmb/servlet/controller?action=Login