I had the same problem. I removed the plugin temporarily (which is a big problem but not as big as not having a site) and I’m trying to get the host to update the PHP version at the moment. What my quick, somewhat frantic troubleshooting found out is that the abbreviated ?: ternary operator syntax they’re using in the new version of the plugin isn’t supported on PHP versions older than 5.3.
https://php.net/manual/en/language.operators.comparison.php#language.operators.comparison.ternary
