Statcounter WP plugin doesn't show anymore in Chome


I am using StatCounter already for years at my Wordpress site without problems. Today StatCounter all of a sudden doesn't show anymore in Chrome, with a message :
"We are experiencing a temporary problem. We'll be back as soon as possible. [...]".

However, the stats show without a problem at, and also when I use Firefox or IE the stats show via the plugin at my site. Only Chrome and Opera don't show the stats anymore and show the 'error' message instead... This happened all of a sudden. One moment it worked, the next moment, after a refresh of the stats, the 'error' message appeared.

I have tried everything to solve it, clearing browsing data and cookies, re-installing chrome, but without result. I keep getting that error message.....

Any thoughts what might be causing this?