Shopify Fullfillment Emails not triggering for gokwik orders

Site link: https://fireboltt.com/

Go Kwik**:** Our company uses a third-party checkout system named “Go Kwik” for their COD & phone number verification features. it is connected with our store with custom app API integration.

Issue**:** The order received from the gokwik checkout process sends the order confirmation email to the customer. But it doesn’t trigger the full-fillment event emails.

Thanks & Regards
Subham