How to enable an opt-in checkbox in your Facebook widget

If the Facebook Messenger opt-in checkbox does not show up in your widget:

1. Right-click on the page
2. Click “Inspect”
3. Select “Console"

At that point, you will see one of the following errors:

1. “ Cannot read property 'LogEvent' ...”. It means that you’re using an old version of Facebook SDK: The system cannot properly read ‘LogEvent’ because you are using an old version. You should replace the call made to:

   https://connect.facebook.net/en_US/all.js?hash=f59028419ed356bc51e489ea53ff3779&ua=modern_es6

   by: 

   https://connect.facebook.net/en_US/sdk.js?hash=f59028419ed356bc51e489ea53ff3779&ua=modern_es6&version=v3.4 

   In this case en_US is just an example it could be something else like fr_fr for example.

   You need to replace all.js with sdk.js
2. "Refused to display *** in a frame because an ancestor violates the following Content Security Policy directive: ***". It means that Facebook does not accept the website domain: The checkbox is not displaying because an ancestor violates Facebook’s Content Security Policy. In this case, you should contact our team at support@carts.guru or login to the app and chat with us now.