I cannot upgrade Dorico 4 pro from 3.5 pro

I just bought Dorico pro 4 (upgrade from 3.5 pro ) but surprise…
Who can explain to me why is not upgradeable?

That is normal/expected and means Steinberg has transferred your license to the Steinberg Application Manager. Open that to continue dowloading (Install All button)/opening/authorizing your Dorico 4 program.

Thank you i solved.