We push updates to our production servers sometimes a couple of times a
week -- when we do this you will be logged out from the system and will not be
able to log in for around 5-10 mins.
In very rare cases our front-end servers may go down, even then, there is nothing to worry about as the frontend is on a completely different server infrastructure from our traffic servers which handle all the redirections.
What this means is that even if you're not able to log into Voluum, your traffic will always flow and you will not lose money.