Troubles authorising Resolve 14

Hi all: I just donwloaded Resolve 14, as I'm working with El Capitan. When I start the program, I receive a screen asking me for the registration code, that I don't have. Somebody knows the way to proceed in this situation?
As Resolve16/17 are free I don't understand why ancient versions must be of payment. I contacted the help email of Black Magic, but theisr answer is that they only help users of paid versions...
Thanks!
Florenci

[Peter Chamberlain]

You have installed the Studio version. Look back on the support site for the free version of v15 which should work