Error: “Could not link Easy Social Feed (A) to Facebook”

Hi, I’m trying to get this working for the first time. The plugin installed okay, but when I try to connect my Facebook account, after I log into it and okay all the “what this app can do” type settings, I get this error page in Facebook:

“Could not link Easy Social Feed (A) to Facebook
You may not be connected to the network or we could not establish a connection with our server. Check your connection and try again later.”

I’ve tried two different browsers. I sure hope the answer isn’t “contact Facebook”…