Tim Hunt

What is going on here is that the request to load the CSS from your server is failing ofr some reason. This is not normal, and we don't know what is happening on your servers.

To work out what the problem is, you need to look in your web server logs (make sure the Debugging setting is and an appropriate level for tracking down the problem). Hopefully the error messages in the logs will point you towards what the problem is, and how to fix it.

Draft file areas should alwasy use the context_user of the user who is currently logged in. (I think.)

In this plugin: https://github.com/moodleou/moodle-qtype_recordrtc I included a third-party js library that was pre-minified in the js folder, and then used it in my code in the amd folder.

I am not sure if that is an offically approved approach, but it worked for me.

Moodle can export and import questions in a variety of formats. See Import questions.

A teacher or admin can review a student's attempt.

There are various causes of different IP addresses. You can get more data if you look in the server (Apache) logs. That probably tells you which web browser the student was using from each IP address. However, what is in the logs is not proof. Probably, you are going to have to assemble a summary of what the logs show, and then ask the student if they can explain what happened.