My advertising agent sent me a GTM code to insert onto my website in the header and footer. I had a similar code with a previous agent. When I replaced the code that was there, with the new one provided, it suddenly became visible to the public (particularily on the mobile version). This obviously looks terrible. Can someone help me figure out how to hide this?
www.maverickpestsolutions.ca
Here is my website so you can see what I mean.