I am using Dawn theme and when i try to add products to cart sometimes it wont see them. Even if the products are added i tried to do the checkout but when i click the button it wont take me anywhere, jusr refreshing the page.
Can you share your store URL, or more specifically, a link to a product page where this problem occurs? I would need to re-create the problem to begin diagnosing. It sounds like a Javascript error that occurs intermittently.
Are you just trying to run a test order? Are you doing so from your admin/theme editor or from the public/customer perspective? Make sure you aren’t in your theme editor when attempting to run tests that involve both cart and checkout.
Additionally, I would advise clearing you cache or attempting to test from a different browser altogether (Chrome that is up-to-date is optimal) and see if that resolves the issue.