On 2/1/19, Social Feed broke for all Facebook accounts. We lost access from Facebook, and had to create a workaround that might still be buggy. We're working on getting full access from Facebook, so that Social Feed users are happy!
Keep an eye out for Social Feed issues, since the fix pushed on Friday might break at any time. Continue to be on the lookout for payment related bugs, as well as any Shopify installs that go wrong.