Djay update

I updated djay for mac to the current version and the update asked me for a license key- how can I tell if I’m running off of the real or demo version- have owned the software for years- very frustrated!

i need help to get my code or key download to me , i lost my key need to reinstall it can you or some one can , need help , thank you

thank you i find the djay 3.0 and i download it but i till can update to the new djay 4.o i call apple and they said i deleted a missing part of the softwae, i was thinking apple had stop me from the mac store, and i had to upgrade to the new os x software sorry to for thinking that but i still need to upgrade my os x imac so thank you for your help ( i messup my os-x software thank you again clarence brooks