Took me a while to unravel the Google Analytics hide-and-seek game. I always use the Universal Analytics Property to connect a website, domain, or sub-domain with Google Analytics for my clients.
A few months ago, Google Analytics rolled out their new tag, gtag, and hid Universal Analytics Property Tag. After some hours from different days of googling and watching YouTube videos, I found what I was looking for right beneath my nose. It was moved to “Advanced Options”. You can’t imagine my joy.
I also added gtag to it to keep on swallowing data because I might need it in the future. Now I use both tags for my website, you should add gtags as well, I have a feeling Google Analytics will remove the other one soon enough.