Activation Code / Resolve Studio 12.5.6

Hello,
simple question : is there a way to use an Activation Code with Resolve Studio 12.5.6 ?
When it opens it says "Studio License Dongle Not found" and there's no prompt for Activation like in version 14.
Context :
one of my machines runs OSX 10.10.5, so I'm stuck with Resolve 12.5.6 (Resolve 14/15 require OSX 10.12).
simple question : is there a way to use an Activation Code with Resolve Studio 12.5.6 ?
When it opens it says "Studio License Dongle Not found" and there's no prompt for Activation like in version 14.
Context :
one of my machines runs OSX 10.10.5, so I'm stuck with Resolve 12.5.6 (Resolve 14/15 require OSX 10.12).