Noah, I'm not sure what you mean by "flag counter", but perhaps I can answer some of your questions.
WikiTree forces us to use something called "wiki code" on the editing page, then WikiTree's software converts that to html code when the page is assembled for dissemination. Some parts of wiki code look a lot like html, but it is absolutely *not* html and, even if the tags look similar, they do not work exactly the same.
If you're looking for the number of hits on your profile page, that is shown there. It's on the left side at the bottom of the data section, just before the biography starts.
If you want to put a flag graphic on your profile, you can either upload one of your own or use one of the existing ones. You can check the help index and look for Flags to find them.
If that doesn't help, please try to clarify exactly what you're looking for so that I or someone else can give you a better answer.