Discrepancies in Subscriber Location Data: Insights Needed

Hey everyone. I’ve noticed that Beehiiv is tagging quite a few of my UK subscribers as US readers. Which led me to look into some of my other publications. In one of my newsletters it shows 78 % of opens coming from the U.S., but our landing-page analytics say under 40 % of visits are U.S.-based. I realize U.S. readers might open more, but that gap seems surprisingly large. Has anyone else seen this? Any ideas what might be skewing the location data?