I advise all players not to use GameRanger for playing – it consistently has bugs, crashes, disconnects, and loss of game days.
That's not true. I've been playing for a while, and I haven't experienced any crashes or disconnects specifically caused by GameRanger.
P.S.: I've already written this more than once, that the chance of morale/luck/ability dropping depends on the pauses between the player's actions.
I'd like to note that during battles with neutrals, morale always repeated after replaying the day (for example, due to a "power outage"). This applies to both my units and the neutrals themselves. And the waiting time definitely doesn't affect it.