License not recognized—old topic but new for me

You may want to try this…
Log into your DEVONtechnologies customer account.
2. Click the appropriate product in the Your Licenses section to display your licensing information.
3. In the Devices section, press the Edit button.
4. Press the encircled minus (-) button next to the device from which you want to remove the seat.
5. Scroll to the top of the page and press the green Activate button.