wjl thanks for taking the time to do some testing. Are you sure you want to share your IP and location that publicly? I don't know your threat model, but redacting IP and location wouldn't change the points you want to get across, so I assume it's unnecessary and potentially harmful data to share.
Edit: Unrelated, but you should check if your German website needs a site notice (German "Impressum"). I wanted to see if the location data you shared are consistent with your notice address, but didn't find any. Would be annoying if a greedy lawyer wanted to cash in on your hobby.