hiker66biker@gmail.com 0 Report post Posted December 20, 2019 (edited) Dear Sir/ Madam, Can you please help me? I have a copy of Nitro PDF 11 with Software Assurance (Licence ********) purchased 1st December 2015. I did not upgrade to Nitro PDF 12 but I am now trying to upgrade directly to Nitro PDF 13. I have downloaded v13 but when I try to activate it says that I have an invalid serial number. Also, when I tried to register for help, your support system did not send a validation eMail to my eMail address (*******), so I was forced to create another eMail address (********) which I am now using. Very strange. I look forward to hearing from you. Robert Hope Edited December 20, 2019 by Leslie V. Confidential information edited Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted December 20, 2019 Hello Robert, Thanks for reaching out to us! I created a ticket so we can reach out to you directly regarding this upgrade. Cheers! Share this post Link to post Share on other sites
