Quiz questions not responding

I'm trying to use the courses online, and I've noticed that the question submissions, seem to hang. I have tested with Brave and Chrome and I've tried with and without extensions. Just wanted to ask if anyone had any suggestions for how to fix this and also let the neo4j team know that the courses aren't super smooth at the moment.

Thanks

I had that issue yesterday too, i just refreshed the page and it was fine.