Home > OpenCart – Mastercard Gateway > Plugins – Simplify migration to Core Gateway

OpenCart – Mastercard Gateway

Created date: 21-04-25   |   Updated date: 11-09-25   |   Plugin version: 1.3.4  |   API version: 100

Plugins – Simplify migration to Core Gateway

The installed Simplify module can be found as follows:

From the dashboard, navigate to the menu on the left side and follow this path:

 

Extensions → Extensions → Choose the extension type dropdown → Payments.

 

This is where you can set up and manage the payment methods for your store.

The installed Simplify module can be found using the Navigation: Extensions, then Extensions, then Choose the extension type dropdown and finally Payments.
Mastercard Gateway - Simplify

Any actions related to a Simplify order must be managed exclusively through the Simplify plugin. These actions cannot be performed using the Enterprise plugin.

Uninstallation

To uninstall the Simplify module, please follow these steps:

Click on Extensions on the left window and click Extensions from the dropdown
Extensions → Extensions

1. Navigate to the menu on the left side and follow this path: Extensions → Extensions

Choose the extension type from dropdown
→ Choose the extension type
Choose Payments from the extension type dropdown
→ Payments

2. Choose the extension type dropdown → Payments

The installed Simplify module can be found using the Navigation: Extensions, then Extensions, then Choose the extension type dropdown and finally Payments.
Mastercard Gateway - Simplify

3. Locate ‘Mastercard Gateway – Simplify’ from the list of payment methods.

Click on Uninstall to uninstall the Extension
Uninstall Extension

4. Click on the Red Icon next to it.

Click ‘OK’ on the confirmation popup to proceed with the uninstallation.
Confirmation Popup

5. A prompt will appear—click ‘OK’ to proceed.

Once successful, the icon will turn Green against the ‘Mastercard Gateway – Simplify’ extension.
Once successful, the icon will turn Green

6. Once successful, the icon will turn Green.

7. Next, from the dashboard, navigate to the menu on the left side and follow this path: Extensions → Installer

Navigate to the menu on the left side and follow this path: Extensions, then Installer and click on the yellow icon next to the ‘Mastercard Gateway – Simplify’ extension.
Extensions - Installer
Click the Red Bin button to delete the module from the server.
Installer page

8. From the list of items in the installer page, Locate Simplify Commerce OpenCart Module and click on the yellow icon next to it.
9. Once successful, the icon will turn Green.
10. Next, click the Red Bin button to delete it from the server.
11. A prompt will appear—click ‘OK’ to confirm.
12. Once deleted, the module will disappear from the list.

After executing these steps, the Simplify Commerce Opencart Module will be completely removed from OpenCart.