I would very much appreciate answers to the following two questions:
1. What timezone is the server in?
2. Why does morale on certain players goes down even if they win? Could it be because they are playing too many games in succession? Is it age-related?

1. I think this depend from a "server" to an other. The company is from Serbia but I don't think it's their timezone.
2. There's no mystery, moral depend on players form and even if you won all games some players will take bad notes and their moral will drop.