If the PC software cannot be certified, the product key number may be malfunctioning. In that case, we will check the key and reissue you with a new number.
As for trouble that this PC software can not be certificated, we can think that there is a possibility that a product key is inferior. In this case, we will check a key and re-issue.
It's possible that your trouble with authenticating the software has to do with a flaw in your product key. In this instance, after having you confirm the key, we will reissue one.
The reason why this PC software cannot recognize can be the problem of product key. In that case, we are going to issue the new one after we check your key.
Please do not hesitate to make an inquiry to our store.