[AndreiWow]

ServerSide money are the money made scriptwise to avoid money hacking and usually are using something different than GivePlayerMoney, and as you described that the money are gone after 3 seconds appeard to me to be server side money because there is no other way to get the money but take them after 3 seconds.

Also you may have ResetPlayerMoney somewhere else, probably not but you never know.

Also check to not have a duplication of GivePlayerMoney with wrong values.