New <section> dont open/work with index-personal.html

Ladies and Gentlemen,

I’m from Germany, so I apologize for my bad English.
I took the “Personal” template from the MegaOne template package and would like to adapt it.

I now need to add additional pages and I want to use the function to do this. Unfortunately this doesn’t work the way I want it to. The documentation didn’t help me either. Unfortunately, the link to the section: test does not open in the browser. Even if I enter the link directly in the address field, the test section does not open !!!
Example: …/main-file/index-personal.html#test

unfortunately the new section does not appear!

I also saw that they have the data-goto function, do I need to associate the sections with an id in any file? in the index file I have e.g. b. "data-goto=“99” selected

Please help. Your temps are nice but the extension still has to work. Thanks so much

Kind regards