My thoughts to learn Shopify sync status -
Frappe moved connectors to the core with the v11 release in January Frappe/ERPNext will have a major update next week! (v11)
So a search like this would probably inform you
https://discuss.frappe.io/search?q=shopify%20sync%20after%3A2018-04-01
To summarize what you conclude would help others like you!