The system will also give you daily money when you are enrolled in a game and participating actively. It only adds money in case your total money is under the game's price, so if you are in Rookies it will try to give you daily money until you have enough to play again, in this case 30 T$.
In case you are enrolled in a game and DO NOT participate the system may "steal" some money from you ;)
BTW: You are enrolled in game #7225 and only sent 1 message.