My iOS application allows me to login using my own facebook account successfully. But when I send it on test flight to a friend, the app downloads but when he presses connect to Facebook (which works on my simulator and personal device), it won't let him log in. Doesn't even give him the option to, just spits out an error (com.facebook.sdk error 2). What am I missing? What would cause it to work for me, but not for others? I'm just looking for a general answer here because I followed all the facebook tutorials and I can't imagine what kind of thing could be going wrong.
I just figured out the problem. Should have been SUPER obvious, but being new to development I didn't realize I needed to change the sandbox setting to disabled in order to allow others to access facebook through my app.