Here is my experience
On a certified 'server' (laptop that I use in Nursing Home and Assisted Living facility) running 9.2, downloaded installer for 9.3 then ran the installer only to get the message the installation could not be completed because no support license or account was out of date(sorry paraphrasing as I didn't copy the message).
My support license is active and up to date until midMarch 2017.
So I aborted the install, actually the installer aborted the install however somehow it corrupted the current instance of 9.2 where it could no longer find the database.
1) Despite 2 phone calls to support tagged as urgent and emails no support call back on weekend when I was on call and needed the information.
2) Monday was called by support was told in conversation ' a bug in the 9.3 installer' caused the account out of date message.
3) So AC now checks if your server is known and certified and also apparently phones home to check your account status before it proceeds.
4) Apparently aborted installations now corrupts current instance.
5) Took support a few hours to get it all up and running, a few hours during regular patient care hours.

I won't be doing MACRA/MIPS, just want a functional fast EHR that I can manage with as little aggravation as possible.

I'm a longtime user, my client # is in the 300's, but again for the second year in a row with a month to go on my support contract I am again looking at open source programs.