I'm using GTM with dual tagging for classic and universal implementations. I added the code and google can see it (after editing my theme's header.php file). Of course cannot see the analytics tracking because it's implemented in GTM (expected behavior)
View source: yep codes there. Just wondering, should I be seeing visits right away? (I'm not). Refreshing the page multiple times never shows a hit for the original or the variation.
I'm using the root of the domain which is my homepage.
Also mobile devices are redirected to a dudamobile site. Not sure if that makes a difference or not.