Free Trial version is still branding my photos even after purchase of Premiere edition

I downloaded the free trial version of Premiere Elements 2020.  I liked it and so I decided to purchase.  When asked if I would like to purchase, I put in the serial number of the edition I purchased.  But when I upload photos to a project, they are branded:  "Made using free trial."  I uninstalled the free version and installed the version that was emailed to me, with my serial number.  But I am still getting that branding on all my photos.