CodeRoad doesnt' launch

I’m learning Relational Databases (Beta). Currently on building database of celestial bodies. Whenever I start the project, it gets stuck on CodeRoad - where ‘Launching’ keeps on buffering. I’m having this problem for 3 days now and I’m frustrated. Can someone please help? I want to finish this course asap.

Thanks!

The Relational Database certification is in beta and is not stable.
When you have issues you can try to read and follow this post: