Uploading Sydney-Pro theme

Hello Team,
I have bought yesterday Sydney-Pro version but I don’t succeed to upload the sydney-pro theme automatically.
I have proceed like this: I go to Appearance > Themes > Add New > Upload

Unfortunately I have this error message in french : Voulez-vous vraiment faire cela ?
Veuillez réessayer.”
Translation : “Do you really need to do this ? Try again.”

Could someone help me please ?

I’m using wordpress version 4.2.4

Thank you in advance for your reply.


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