1. The software is taking a long time to render video's.
My answer (not support) I can only assume that it is due to the fact that everyone is rendering "test" video's.
I would imagine their servers are overwhelmed. I have seen this problem many times, then they get it sorted.
It would be a good idea to message their support and see what they say.
Also, try a different browser, or computer if you have one, just incase it is a local problem.