ERPNext Shopify Connector Port

I have a question , to connect erpnext to shopify witch port should be keep open in erpnext server ?

Check this out.
What issue you are facing?

Reference Links

if you are using v11 or higher version. the connector is available. you don’t need to install it separately.
This app has been deprecated.

yes it’s last version , issue erpnext server located behind nat in local office , if i know witch port need to communicate from shopify to erpnext i can forward that port on router to erpnext server .
Now we do all setting but sync not work.
I don’t know what is problem