Hi,
If you want to link a section of the same page, you may follow this:
- Give ROW/Section name in field: Section ID
for example: testSectionName
remember no # or space between, only "-" if you really need to
- In button put in button link as > #testSectionName
-
If you want to link a section of a different page, you have to try using the whole URL with http(s),
for example:
https://domain-name.com/#testSectionName
Have you already looked into this for landing page solution?
https://www.joomshaper.com/blog/how-to-create-a-landing-page-with-sp-page-builder
Have you set header sticky option in the basic tab of the Template options?
Best Regards