Map keeps centering in England

Hello,

This plugin was working fine for showing a single map with all my posts location on one of my pages (chris-lewis.net/travel). At some point, however, it began to center in England. If you drag it over to South America, you can see it’s still picking up my post with a geo tag, but nevertheless, it keeps centering on England. Any way to fix this?

Thanks!

https://www.ads-software.com/plugins/wp-geo/