Hello Gerd,
I would like to thank you for your outstanding program. I know well how much time and effort a project like this requires. I have a few comments that may help some:
1. For those wanting English (or another language) Google Chrome will translate all of the web page text. It isn't perfect but it helps considerably. The drawback is that it translates the tab labels as well, so to change tabs, you must first turn off the translation, change tabs, then turn the translation back on.
2. The NTP offset acts like it takes negative numbers, but upon reloading the page you can see that it does not. If it is an easy repair, I would be most appreciative.
3. The Lolin D32 Pro microcontroller has pads for a Ufi connector, so cutting antenna traces can be avoided. The connectors are available from aliexpress. There is a zero ohm resistor that also needs to move. Look for info about ESP32 CAM board for more details about how this works.
Thanks again for your effort.
Best regards,
Barry