Google Analytics Code Not showing up in the source code

On June 29th, Google Analytics quit working on [ redundant link removed ]. I have been trying to figure out why ever since. My developer can’t figure it out, the Google Analytics Team blames it on WordPress, but this is the only website with which this issue has arisen.

We have tried placing it in the header.php and the footer.php files:

1. Directly from Appearance>Editor
2. Using the Divi theme code injection:
a. Divi>Theme Options>Integrations>Add code to the < head > of your blog
b. Divi>Theme Options>Integrations>Add code to the < body > (good for tracking codes such as google analytics)
3. We also tried adding the plugin “Insert Headers and Footers” and Monster Insights.

Nothing works. Can somebody help me?

The page I need help with: [log in to see the link]