Can not open Cubase 15 upgrade from Cubase 9 on mac book M5 Tahoe 26

Need help !

I was running Cubase pro9 since years with USB dongle,

Just bought a new Macbook pro M5 runninig under OS Hahoe26.3

I purchased an upgrade to Cubase15 ,have download access codes ,download Activation manager ,stick the dangle .But can not open Cubase 15 haveing checking licenses mesage

Hi and welcome to the forum,

How does it look like in Steinberg Activation Manager? Do you see Cubase 15 licence, please?