Please add a new post rather than bumping up an old thread from 2018.
You can simply refer back to this post with a link.
If you use the search function too, you would find many previous posts on using iFrames or custom tool in Tracking and Analytics section.
As for the issue itself, please note that you are using third party code which Wix will not provide support for as it has not had the chance to test it fully works on their servers etc.
Therefore, if you are having issues with code from a third party, you are best suited going back to their own support for more help integrating it with Wix.
You can read about adding html code to your Wix website through either using a html iFrame on your page or adding it as a custom tool in Tracking and Analytics here.
https://support.wix.com/en/article/using-iframes-to-display-visible-content-on-your-site
https://support.wix.com/en/article/embedding-custom-code-to-your-site
As stated on both of those linked pages above.
**Wix cannot provide support for external codes that were not created or tested with Wix. If you are experiencing an issue with your code snippet, please contact the provider directly. **