Ooh, I might actually be able to help here. Try disabling screen sleep in your power options and see if that fixes it. It took me a long time to narrow my issues down to that. I still don't know why it happens.
And definitely let me know if that fixes the issue for you. I'd love to know it's not just me and my laptop.
This also helps with scoring an A1 instance in the first place. Took several days to get my first one (using the script). And then when I wanted to nuke that one to recreate it I instantly hit the "out of capacity" message again.
Switched to a PAYG account and instantly got a new instance. Still never pay a dime.