"Requesting Execution" spiralling icon issue - Any way to get around it?

As I try to test run scenarios, I sometimes get stuck at “Requesting Execution” status. I looked through some of the forums and can’t seem to find a solution.

One of them suggested that it could be that I’m hitting the rate limits or that I could be using a hosting server that’s busy.

Not sure if any of them are within my control though?

Is anyone else facing the same issue? Any suggestions to resolve?