Sorry i can’t do that – this is a live site. I did see an error log though and got this error:

I took a look at the URL and am seeing a “cant update cart widget” error in the console. The origin of this error is https://km-fit.com/wp-content/themes/basel/js/theme.min.js?ver=4.3.0. This looks to me like a theme error relating to the “Add to Cart” button. Subscription products do not use the “Add to Cart” button, which is why you aren’t seeing this error on your subscription product pages.