For those still having trouble connecting to an AWS EC2 instance, I found a nice set of videos that walk you through it, starting with:
Also – you may initially have an instance limit of 0 for the type of instance you need (e.g. p3.2xlarge), in which case simply request a limit increase, making sure you specify the type of instance and the correct region. You can check your current limits on the ‘limits’ tab in your EC2 dashboard.
