You were already reported for similar offense. But in the last report, you were quite far from him and it was not clear that he fought you since he only threw molotov after you paused the game. Thus, you were only verbally warned by Aaron for pausing in combat zone so you will be more careful in the future. However, this time you were clearly fighting him, you ran to heal, paused at the fight zone and came back to fight him again quite soon after you paused. You should have moved out of the combat zone or let him kill you if you were to pause your game. So, since you were already verbally warned by Aaron for similar offense, it's decided this will be your first official warn as staff member
You may check 'List of staff warns' in Staff Discussion board for more information/reference.