Offline installation: how to create the SMTG file?

I installed dorico 4 on my computer which does not have internet and I want to activate it with the “offline” method from the new version of steinberg Activation Manager but I can’t: when I launch Dorico 4 the steinberg Activation Manager tells me that there is no network (normal!) but does not offer me anything else like creating an SMTG file that I can enter into a Steinberg Activation Manager from an online computer?!
EDIT: My online computer screen and what I tried:

OK Found the problem:
When you lanch Dorico 4 on a offline computer you will see that:

What we need to do is to quit Dorico 4 and launch manually the steinberg Activation Manager to see the right panel : not very logic and intuitive.So for the next people…

best regards