I have checked your website and, although the base code is present, it is duplicated. Also, I tested your add to cart event and it isn't working as expected. This is why the tag is showing as unhealthy. Please review your Pinterest tag implementation and make sure that the events are placed correctly. You can use this Help Center article to do so.
You can also use the Pinterest Tag Helper to check if the events are working. It can take up to seven days after an event is fired for the Pinterest Tag to be considered healthy, so you'll just need to wait for it to be updated. I would recommend checking Ads > Conversions and making sure that Pinterest is receiving the Tag fire information.
I hope you were able to solve it. Let us know if you have any questions!