I recently moved my installation to a new vps. Starting on Saturday afternoon this behavior started out of nowhere and it does not seem to go away. Prior to that everything was working fine. Nothing new was added or removed. It works randomly. I cannot pin point what’s causing it or able to replicate it. Sometimes I’ll visit the website in the AM and it won’t work, then I will go back in the afternoon and it’s working by itself.

See these vid to see it in action.

Here are two websites. Once is a clone of the other. In one everything works fine, in the other I can’t add anything to the cart, and when trying to add ingredients the price changes to 0.00.
Both running the same exact plugins. Even the theme.
https://db.tt/EgR9LZhP

Here’s another one where the same website. It works on the computer browser, but it doesn’t on the tablet browser.
https://db.tt/IvtuKe7Y