Too many attempts at Checkout

[aamirbilvani]

We are encountering this issue when some users try to perform checkout on our store (it is happening intermittently). We’re not entirely sure why this is happening, since everything appears to be OK, and also because this error is appearing after the Checkout process has been initiated, which is out of our control (since Shopify locks this part of the process).

Users have experienced this on both iOS and Android (on Chrome in both occasions). One thing to note is that we are applying a discount using some javascript before going to Checkout. This is done as follows:

• A shopify URL exists which you can use to apply a discount, and after calling this URL, the user is redirected to the home page of the website. https://dvago.pk/discount/Medicine%205%25%20off. We first call this URL using jquery so that the discount gets applied
• Since we don’t know whether the discount has been applied or not, we call the checkout page using jquery, and check the HTML response to find out whether the discount has been applied
• Finally, we take the user to the checkout page

The user is able to get to the first Checkout screen (Customer Information) without issue, and only once they click “Continue to Shipping” (or sometimes once they click from the Shipping screen to “Continue to Payments”) they get this issue.

Anybody have any ideas? Any help would be appreciated.