I made a new freelance page. And deleted the old freelance page.
On my homepage I changed a button to link to this new page.
In preview mode this works.
But when published it links me to a 404 page not found page.
I fixed it by creating another new page and copying everything to this by page by making it a symbol first. Dragged it into the new page and unlinked instance from symbol.
It seems to me that the 404 page not found is a webflow bug.