mseeger 0 Report post Posted October 5, 2019 My Nitro Pro 11 has reverted back to trial. I used your portal to deactivate as instructed but see nowhere in Nitro Pro to enter my serial number to reactivate. Please advise soonest. Thanks. Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted October 7, 2019 Hello @mseeger, Thanks for posting here! After installation, you can activate by opening Nitro, click on the Help tab > About Nitro Pro > Activate and enter your serial. I hope that helps! Share this post Link to post Share on other sites
