@Toby @Franz I'm not a developer, but I suppose it is a problem with the cache.
Probably the caching technology you're using is very powerful. The new home page was not loading until I hard refreshed it several times. I face a similar issue whenever I enable cache on my sites. It won't show the changes after pressing Ctrl+5 (Google Chrome) several times, or even opening it in incognito. Lol, seriously.. 😃
So you may want to masterflush the cache.
