Apparently server passwords are reset after a certain amount of time, expressed in in-game years, has passed.
I think it should be expressed in real time.
Time in the game flows in a variable manner, according to how often other players are active (more activity, it flows faster). This means it is very difficult for players with other commitments, or who are away, for example, to know their company is "safe" for e.g. a week, 10 days etc. Activity may suddenly increase, or decrease.
Whereas if it were expressed in real world days it would be predictable and reliable.