After publishing an updated node.js app to Heroku in our prod env. I'm not seeing any changes

Just update this and add a little more detail. Our node.js app is using webhooks to listen to Shopify more specifically orders/create. Our staging app has been working with no issues and our prod app has been working fine as well. I just made some enhancements to one our apps features and have not touched anything related to the code around the webhooks. After deploying to prod, out prod Shopify store is still running like it has in the past and but our prod Node.js app seems to be totally ignored. I’ve tried purging cache on Heroku and tried purging cache on Shopify with no luck. Does anyone have any ideas to what I might be able to try next?