Windows8 Pro - Product Key not accepted while activation.

[Windows 8]

I purchased Windows8Pro in summary of order WD05378822 Invoice date 11-10-2012 direct from Microsoft and received 2 Nos. DVD for 32bit and 64bit installation. ever since I am using the same and upgraded to Windows10. Recently I am receiving that I could not upgrade because of problems with PC. So, I upgraded PC to DDR3 and installed windows8 64 bit and whenever I attempt to activate windows I am receiving message to use the product key provided by the microsoft at the time of purchase of DVDs. I communicated to the seller mail address enclosing the invoice and informed I am using the product k

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