You may have 3 machines authorised at any one time. Our license asks you only edit on one of them.
These 3 machines are reserved for your account use for 180 days from the last sign in.
There is currently no way to "deregister" a machine from your machine count without contacting us in support.
We are happy for you to contact us in support for this reason.
Gaining control of our auth system is a big win for us, and there is no reason to suggest that all of the authorisation options are set in stone. We are very interested in getting people's feedback on this, and working with people to get Max 7 going in their workflow
A couple of other things.
The new "runtime" behaviour allows opening and editing but not saving.
You may find in certain situations where you are rapidly developing on a machine that it is more convenient for you to create a new account and run the demo for 30 days.
Any questions, please feel free to ask
Cheers
-A