Also, there is no company anymore. It went out of business.

Nice, I at least received an automatic reply now from info@denic.de

I wrote them a mail which was linked under "general request". I just noticed it was in even in December 2022, not January 2023.

I just wrote them again asking if they received my mail and forwarded that to their info@denic.de address. Just saw they have more contact info on their website.

If they still don't reply, I'll give them a call. I won't give up that easily haha

bitcoin

Ask SN: What to do if the domain owner died and the domain is still occupied?

You should contact the agency to transfer the domain or wait until the domain expires (however if they have auto-renew and don't bother with the extra money leaving the company's pockets it will not happen soon).