WG2019 0 Report post Posted October 18, 2019 I just purchased Nitro pro and was emailed a serial number. When I try to activate my subscription, it says "-20: Error - Invalid License number. The serial number entered does not exist. What do I do now? Share this post Link to post Share on other sites
AllainU 0 Report post Posted October 18, 2019 Hello @WG2019, Thank you for reaching out to us through our Community Forums! In order to further assist you, could you please provide a screenshot of your 'About Nitro Pro' window under Help tab? Thank you very much in advance and I am looking forward to hearing back from you. Share this post Link to post Share on other sites
WG2019 0 Report post Posted October 18, 2019 My computer only allows me to save screenshots as Jpeg's and I cant see how to attach that here. I can email a screenshot if that helps. The About Nitro Pro shows: Nitro Pro 13.16.3.574 (C) 2005-2019 Nitro Software, Inc. and its licensors. All rights Reserved. Button for "Legal notices" Button for "Activate" Nitro Link: Visit our website Get Support License agreement Button for "OK" Share this post Link to post Share on other sites
AllainU 0 Report post Posted October 21, 2019 Hello @WG2019, Thank you for your response. I sent you a private message to further assist you. Cheers! Share this post Link to post Share on other sites
