If for some reason you set incorrect test or production credentials for the Shopify add-on, in this article you will find how to correct them.
In Shopify, please go to Settings > Payments > in the Supported payment methods part, click through to the GoPay detail.
Then, at the top right, click More actions and then Manage.
The GoPay payment gateway configuration options will be displayed. At the bottom left, click Back.
Now, in Credentials for connecting to GoPay, please enter the test credentials (you will find them in the test integration summary sent by e-mail) and click Verify TEST credentials.
In the next step, please enter the production credentials. You will find the Client Secret and ClientID in the SMS message and the GoID in the production integration summary sent by e-mail. Then click Verify production credentials.
Finally, click Save settings.
You have successfully corrected the credentials settings and can start processing payments.
We would like to point out that the Apple Pay and Google Pay payment methods cannot be used at the payment gateway within the plugin – this is a limitation on Shopify's side.