>> "Is there a way to see product key and email of an offline activation XML file?"
No.
You could use their credit card information (and search your payment portal), old email addresses, etc.
Is there a way to see product key and email of an offline activation XML file?
There is a user where I have no evidence of a purchase except that XML file.
>> "Is there a way to see product key and email of an offline activation XML file?"
No.
You could use their credit card information (and search your payment portal), old email addresses, etc.