Issues with krankenkassenzentrale.de access could stem from improper redirect settings between different versions of the site. Check the following links for alternative routes:

http://krankenkassenzentrale.de http://www.krankenkassenzentrale.de https://krankenkassenzentrale.de https://www.krankenkassenzentrale.de

Or return to the current status page of krankenkassenzentrale.de.