remove unneeded defer
remove syntax artifacts
avoid echoing variables
You can also use your local clone with
A plugin for WordPress that acts as a measure against Meta's newest habit of injecting custom tracking JS into in-app browser sessions.
More info on what is going on: https://krausefx.com/blog/ios-privacy-instagram-and-facebook-can-track-anything-you-do-on-any-website-in-their-in-app-browser