The easiest way to connect to Apple or Google pay is by logging into the Mynt app and then pressing "Cards".

There you will see your Mynt card and an "add to Apple/Google Wallet" button.

After you press it, you will need to agree to Apple's/Google's terms and conditions.

After the card is set up, you will see it in your Apple/Google Wallet. It will also say "card added to Apple/Google Wallet" inside the Mynt app.
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If you want to read more about payment with Apple pay, follow the link:
mynt.com/apple-pay 