I understand why Amazon's developer consoles -- both Alexa and AWS -- time out if unused.
The problem is, they don't TELL us they have timed out. Instead they give us various "you can't do that" messages.
And we can't just sign back in and continue -- we need to explicitly log out and log back in, then find our way back to the page we were looking at.
Most non-Amazon web tools seem to handle this better. Please look at what they do and learn from it. Amazon can afford to make some investment in this basic a user interface design issue!