Installed plugin v4.2.3 yesterday, authorized using plugin Google API for a single WordPress site. Everything works greats except the Real-Time report displays zero for all metrics:
By contrast, the direct Google Analytics -> Real-Time -> Overview (/www.google.com/analytics/web/#realtime/rt-overview) report displays 13 users. I do have an Account, Property and View defined in Google Analytics. I have not upgraded the GA .js tracking code to new "Universal Analystics".
I have an established and well-visited site, so it's not an issue of no active visitors.
Tried clearing the plugin, WP Engine and CloudFlare caches with no luck. Again, all other Today, Yesterday, Last 30 and 90 day reports are accurate and very nice.
I do not have any other Google or active users plugins.