I have a weird problem with Google Analytics. Several of our sites are not pulling in data in Analytics. It started on September 7th, 2017. We were using a non-standard implementation (taken from HTML5 boilerplate) of the analytics code originally. So, I switched that out for the code straight from the Google Analytics admin page. But, no hits are still coming in.
I've tried the newest gtag code, and the older analytics.js code and nothing seems to work.
One really odd thing I've noticed: in the Google Analyics admin area (administration > property settings - Property Hit Volume), it says I have been getting hits in the past day.
This makes me wonder if there is an error within Google Analytics itself? Any ideas or thoughts?