Please follow the below steps to test HitPay payments in your Shopify
Create a new sandbox account here : https://dashboard.staging.hit-pay.com
This is a separate account from your live HitPay account and must only be used for testing purposes.
Enable payment methods by setting up PayNow or connect a Stripe account to enable credit card payments under Settings > Payment Methods
Navigate to Settings > Payment Gateway > Client ID and click on Create New Client
Copy the client ID and Secret keys into your Shopify Payment Settings as shown below.
Shopify HitPay Settings
Please ensure the test mode is switched on
Mock a Payment
When you land on the checkout page in Test mode, to make a PayNow transaction successful, you need to scan the QR using your camera app. You will be redirected to a url and on the Url, click on the PayNow button to make the transaction successful.
When you land on the checkout page in Test mode, to make a card transaction successful, you can enter the card number 4242 4242 4242 4242,