In Multiplayer, I've set both Standby and Maximum servers to 0, but it still shows that I have 1 active server running. If I try to remove all regions, it says I have to have at least 1 region. So there is no apparent way to stop it using up billable hours.
There really ought to be a simple way, to disable servers from running without having to delete all builds. (I always use previous builds as templates to add new ones, so I need some old builds that I could use for that)
Also, a bit more transparency would be appreciated in billing. There should be a summary of the running total somewhere as of how many billable hours I've used across the board without having to wait until the end of the month.
The "Total usage" under Multiplayer only shows 'Concurrent Cores', not instance hours. Instance hours information is only available per each build, but not for builds that have already been deleted, so I have no way of knowing how much I have used in total.