Why don't my Facebook posts appear?
For Happy Checkout to read your Facebook posts, they must be publicly accessible. If a user can't view your posts while logged in, then our app can't either. You can check this by logging out of Facebook, then attempting to view your page or profile. If you can't see posts while logged out, then Happy Checkout won't be able to display these Facebook posts.
For example, notice that you can view the ShopStorm page while logged out of Facebook, which means Happy Checkout can include it. Ensure your business page is public and has no age restrictions for viewing.
If you want to include a personal timeline, then you must make this public as well. You can follow the steps listed here to make your personal account public.