Facebook is a great way to get more users to order online from your store.
When you boost a post, add a button "Shop Now", and let people download the app "https://bpb6.app.link/AVOmcSignup" and shop from your store. Adding a call to action button helps to get more conversions.
Add a message like this for promotion: Order from "YOUR STORE" using AVOCADO Shopping app. Use code: DE10 to get $10 off + 14 days free delivery