même numéro de série!!???

Bonjour,
Voilà le mail que je vient de reçevoir,j'aimerai comprendre...:
" Hi,
We received a message from our forum admin. You’re using the same serial number that another user on our forum. Can you please let us know where you buy your product? If you didn’t buy the software can you tell us where you get it?
We’re looking for your quick reply.
Best regards,
MixVibes
Activation team"
Merci
Voilà le mail que je vient de reçevoir,j'aimerai comprendre...:
" Hi,
We received a message from our forum admin. You’re using the same serial number that another user on our forum. Can you please let us know where you buy your product? If you didn’t buy the software can you tell us where you get it?
We’re looking for your quick reply.
Best regards,
MixVibes
Activation team"
Merci