Simulation panel doesn't load

Hello, I’m trying to follow the courses on Robot Ignite but the simulation panel doesn’t load in my browser.
I’m running Firefox on Ubuntu. What can I do?
Thanks for your help

Hi @hobyr,

Welcome to our community.

Are you still having this problem? I suppose everything else loads, except the simulation, and I right?

If this happens again, could you click the “reload the simulation” button available on the right side of the simulation, wait some time to see whether it loads?

If that still doesn’t solve the problem, could you send us a screenshot?

Below I send an image that shows the “reload the simulation” button.