What is an App ID and how to create an app?
AppID is a unique identifier of your social media application. To get an App ID, you need to create an app first.
To create an app on Facebook, log into your account and go to: https://developers.facebook.com/apps
Once you're there, click on the "Add a New App" button.
In the window that will appear, select "For Everything Else".
At the next step, name your app, fill in your contact information, and then click "Create an App". Next, you will be redirected to the developer panel. Select "Facebook Login" there.
Then, choose your platform – Web. Enter your website URL and click "Save". Please note that the website address should fully match the address that is specified in the uSocial widget settings.
An App ID can be found in the top menu of the developer panel, or you can always find it under the General Settings tab.