What do you mean?
Are you using the CD/download version installed on your computer?
If so, Mac or Windows?
I am using the CD / download version on a Windows 10 PC.
I boot up the computer and, within a few minutes, the program opens with no action to do so taken by me. I close the program. It will then open itself up again. Sometimes in a few minutes; sometimes it will take longer.
I have gone into the update settings and turned off all automatic updates / downloads.
That sounds like a Windows feature. I am a Mac person, but Mac allows a user to specify specific programs to start automatically after a reboot. Probably Windows does also.
(A quick search turned up this MS link for startup apps)
https://support.microsoft.com/en-us/help/4026268/windows-10-change-startup-apps
Sorry, that's not it.
I am familiar with this Windows feature and it was the first thing I checked.
Also, that would not account for it auto-launching over and over.
Russ