Why charge me twice activation by my only one installation

 
I installed once of the EA.  But I received twice of the installation notification.  Each time charged me one activation.  That means it reduce 2 activation for one installation.  This is unfair.   It is not according to the agreement.  This is the first time I have this unpleasant experience.  I don't know when this this will happen next time and for other EAs.  From where or who I can ask for the help for this terrible mistake by MQL5?
 
HO YUEN DAVID SIN:
I installed once of the EA.  But I received twice of the installation notification.  Each time charged me one activation.  That means it reduce 2 activation for one installation.  This is unfair.   It is not according to the agreement.  This is the first time I have this unpleasant experience.  I don't know when this this will happen next time and for other EAs.  From where or who I can ask for the help for this terrible mistake by MQL5?

Contact the Service Desk about this, we can't help you here.