Is the KFW loan not registered in the land charge?

Yes, it is completely normal. It is also stated somewhere on the [KFW] page that the respective house bank is the contact person and contractual partner. The house bank only passes on the money from [KfW] at correspondingly favorable conditions (and probably earns a few € with it?).

All right, thank you! Then everything is fine!

Yes, it is normal! The bank holds the mortgage and bears the risk for KfW

The Kfw renovation loan was in our second rank.

There, only Sparkasse Osnabrück is listed with €348,000?!

Is that normal? Or has something gone wrong?

Since the KfW is not the lender but only offers cheap refinancing, ONLY your bank will ALWAYS be listed in the land register. No matter whether there is one, two, or three land charges.

I thank everyone for your help! :)