I need some assistance to fix some issues with my new Chamilo LMS installation and I cannot resolve following the troubleshootings.
1. Registration page is empty (just a blank page appears)
2. Facebook login. It is not working. I got an Invalid app id error even the app id is correctly set up.
3. Exercises and texts are not working (when a question is answered and try to go to the next question, it doesn't go forward, it keep as saving but nothing happens)
4. Customize the login page and the Template.