Hello @Baybute and thanks for you post. I'm sorry you're having trouble with your website. Are you able to test on another device or your phone, to see how far you can potentially get in the order process? Did this person tell any more specifics about the ordering issue? If you post your website someone could take a look and see if there are any red flags in your set up.
Note: it could be as easy as that person clearing their browser cache, or perhaps a compatibility issue with a certain OS or browser.
