where can i found the product code, there's no message entry from my email

Hi @DL_13073211, 

Welcome to the PTC Community, and thank you for your question.

To assist you better, could you please provide more details and context regarding your inquiry?
 

1. Which version of Mathcad are you using? 
2. Did you receive any installation instructions or documentation when you purchased Mathcad?

Including screenshots can also be beneficial in understanding your process. This will enhance the likelihood of receiving valuable assistance from other Community members.

Please check if this resource proves to be helpful?

Best Regards,

Vivek N
Community Moderation Team.