Windows 10: Can't find the confirmation email for Windows 10 pro product key.

Hi,I recently had a shop build me a PC and they installed a unactivated Windows 10 Home. I have just purchased a Windows 10 Pro so that I could activate it. But I failed to save the product key on the page when I just bought the software and I can't seem to find the confirmation email for the order #2595620694. Could I have that email resent somehow? I have waited quite a few minutes for it and there's nothing in the junk folders or anywhere. Thanks.

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Windows Messenger Confirmation Email

No It didnt appear in my spam box but I updated to Windows live Messenger which sent the confirmation email and also verified windows messenger. Ty everyone for there suggestions

 

Windows 10 pro windows defender asking for product key

I originally purchased Windows 10 Home, then purchased update to Windows 10 Pro. In confirmation email there was no product key but windows defender is asking for product key.

 

windows 10 key

Thanks but I don't want to do any decrypting. I want to download a Win 10 ISO from Microsoft and install it using my Win 8 key. No other steps required. Is that possible?