firstname.lastname@example.org Posted October 10, 2019 Report Share Posted October 10, 2019 I purchased Nitro Productivity Suite online yesterday. When I tried to activate, I got an error 20(?) saying that the serial number is not valid. I have tried entering the SN and also copy/paste - neither works. I submitted a support ticket, but I'm not VIP, so I've gotten no reply. Who do I contact to get a valid SN? Link to comment Share on other sites More sharing options...
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