Hi and welcome,
What do you mean by “resist”, please?
I wonder about your free update a bit, to be honest. It the license hasn’t been activated yet, then you are allowed to upgrade to the current Cubase version, once you activate it, i.e. Cubase 9 at the moment. If the license has been activated already, there is no free upgrade available. In this case, it would be Cubase 8.5 license already.