Hi, I've problem  activating Nitro Pro 10. After a crash with my Windows 10 an reinstalling my Nitro Pro 10, following the support instructions I deactivate the installation, unistalled from the computer and installed again. After installation I found the msg (your trial expired). I used the serial number of my Nitro Pro and the response was : max. licence number used. What can I do now? I need help. Regards Piero