Mindbody Login link in navigation is flashing code

Site URL: https://museyogaphl.com/

I followed the steps outlined by MindBody here:

https://support.mindbodyonline.com/s/article/Putting-a-Login-Register-link-in-the-navigation-on-SquareSpace-7-branded-web-tools-formerly-HealCode?language=en_US

But every time a page loads there is a code snippet

" data-animation-role="header-element"> 

that displays (see attached video of me refreshing the page).

See attached for how I'm configuring the link in the navigation.

Here is the code snippet with the siteID replaced with XXXXXX:

<script src="https://widgets.mindbodyonline.com/javascripts/healcode.js" type="text/javascript"></script><healcode-widget data-version="0.2" data-link-class="loginRegister" data-site-id="XXXXXX" data-mb-site-id="XXXXXXX" data-bw-identity-site="false" data-type="account-link" data-inner-html="Login | Register"  />

What else can I do?