Configure the Shopify Extension {#shopify-configuring}
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Configure the Shopify extension and enable 3-D Secure.
Follow these steps to configure the Shopify store:

1. Log in to your Shopify account.
2. Go to Settings \> Payments \> Manage.
3. Select the card brands and payment methods that you want to accept.
4. Click Save.

If you are using the test server, ensure that the Test Mode toggle is set to `On`.