To Install and Configure HeartLand Retail, Go to Settings - > click on Integrations-> click on Connect -> click on Allow.
You will now see that you have configured the app.
When the integration is complete, you will now see the 99minds app under the My Account -> Application on HeartLand.
Next, go to Payment Types-> Gift Card and Click on Active
And Payment Processing -> With Custom Webhooks
That's it! Your HeartLand Retail is connected to 99minds.