@nicoduck @Ursalzona
If they do not give you information about your personal data within 30 days, you can escalate the case to the bavarian Privacy (BayLDA), which is the supervisory authority for Hetzner.
If they try to deny your access request, the BayLDA is also the next step of escalation.
In both cases you can start the enquiry at https://www.lda.bayern.de/de/beschwerde.html
@nicoduck @Ursalzona
I think both the Bundesnetzagentur and the BayLDA only offer contact forms in german.
In both cases it should be ok to answer the questions in english. To understand the questions, just use some auto translation tool.