Hello, @TFS,
Most 27-inch monitors either have a 4k or 1440p resolution, which both result in good text clarity, but there are a few cheaper ones with a 1080p resolution.
So I checked your site on the 1440px screen and it is working perfectly fine and none of the parts are cut Off. Please check the screenshot under the private content area:
So it is surely the cache issue at your end nothing else, please try to clear the cache and check back.
Regards 8Themes Team.