Hello,
Thanks for your inquiry and sorry for late reply due to the weekend.
Please kindly note that converting documents from ".doc" or ".docx" files to .PDF format is a function of our Spire.Doc Pro Edition. But I checked our records and found that you only purchased a license for Spire.PDF. Therefore, when you do the conversion, you will get an evaluation warning message.
For your situation, you can contact our sales team (
sales@e-iceblue.com) to upgrade from your current $599 Spire.PDF Pro Edition Developer Subscription to the $799 Spire.Doc Pro Edition Developer Subscription by paying their price difference at $200.