installing cubase 9 wit cubase 7 still on puter

hi…need some help…I got cubase 7 on my Imac and I want to go to cubase 9. I got 2 options one is the upgrade…the other is getting the complete program on disk wit new dongle…since my internet is extremly slow Im thinking of getting the full version on disk…wil that cause any problems registering it since I already have the 7 in my account?..wil it allow me to? on this subject please…what can I expect?..yes I know i would have to use the new dongle and take the old one off the mac…but i wonder about if my account will allow me to have both 7 and 9 on it?

thank you

The answer is in the other thread you posted on the same topic.