Isaac will you please create and install GTM? 
https://langer-aesthetics.com/

Alyssa - ADDED

<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-5HBKXXS8');</script>
<!-- End Google Tag Manager -->


<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5HBKXXS8"
height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- End Google Tag Manager (noscript) -->

Hector  fyi ^^

Thank you Alyssa.
Isaac
I am seeing 2 GTMs on this client's site. The bottom one belongs to  go.bluewaterspany.com client.

GTM-5HBKXXS8
GTM-MXS8NKL

Can you please remove that GTM from there?

I am also seeing this GA4 on the site - G-76CFY3X562 -
That Google analytics account belongs to Blue Water as well. We need that one
removed too.

Thank you. 

image.png 1.08 MB • Download

Hector - Nice find. UPDATED.

Thank you Isaac.
I am seeing that it is correct now. 
GTM-5HBKXXS8

image.png 793 KB • Download