Before installing and setting up the new Shopify GoPay add-on (plugin) we recommend uninstalling the original Shopify add-on first.
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Please note that the plugin can only be used for the same merchant outlet / e-shop URL that you registered with the GoPay payment gateway. It cannot be used for a Shopify temporary URL (nazev-eshopu.myshopify.com).
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The plugin is available on the Shopify App Store: https://apps.shopify.com/gopay-payments?locale=cs
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On that page click the Add app button and then select the e-shop you want to add GoPay to. After a moment a dialogue will open where you confirm the installation with the Install app

button Then a form will open where you enter the test credentials you received from us. On the next page, enter the production credentials. If you do not have the test or production credentials yet, wait before installing the app and first complete the steps needed to obtain them. You can contact us at [email protected].
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​When entering the credentials, please make sure they are always entered correctly.
You will find the test Client Secret, ClientID and GoID in the test integration summary sent by e-mail. The production Client Secret and ClientID are sent by SMS; you will find the production GoID in the production integration summary sent by e-mail.

On the next page click the Activate button at the top and then, on the following page, Activate GoPay at the bottom right. The payment gateway will then be active.

In the payment gateway settings you can choose:

You reach the GoPay app settings as follows – in the Shopify administration click Settings -> Payments, then click Manage in the box stating Provider: GoPay. There you can activate test mode, or get to the configuration by clicking the Manage button.

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This can happen if you did not uninstall the original Shopify add-on, installed the new one and only then uninstalled the original. The following examples are illustrative only; some names / labels may differ from those shown in your Shopify administration.
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Go to Settings.

Continue to Payments. The active add-ons will be displayed there; the new one may also be shown (if it is not, you will need to add it in the following steps).

If the original add-on is still active, click Manage next to it and deactivate it.

If the new add-on was not in the list of add-ons, add it via Add payment methods, then enter the word gopay on the Search by provider tab. The new add-on should be found / offered (the payment card logos are shown next to it) – click it and then click Activate.

The new add-on will then be active and the payment methods relating to it will start to be displayed in the order basket in the e-shop.

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.