Dale Tuggy Posted October 23, 2018 Report Share Posted October 23, 2018 Hi folks, Recently bought Nitro Pro 12. Activated on one computer, tried to activate on a second, but it didn't work, with the above error. So I looked around here, found the "activation portal" and using that I deactivated all (one of) my installs, then tried to activate again, using that serial number. Nope! Error -23, "License Number already used" - although, it is *not* used - it has showed 0 activations for several days now. Please help. I'm back stuck in Trial Mode. Thanks, Dale Link to comment Share on other sites More sharing options...
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