Add analytics to your site using gtag code

When adding analytics to our sites using the SEO window only tracking ids (UA) are available to use.

What you can do is to add analytics using gtag code. Please see more on this -

https://www.w3schools.com/howto/howto_google_analytics.asp

Please see how to add code to the head code of the site - http://hc.imcreator.com/en/articles/3128312-add-code-to-head-of-your-site