Moving MYOB (AccountEdge Pro 2016) to another computer

I can't even find if I am in the right place for this. Apparently I upgraded my MYOB software in 2016 and the name changed.

I used to be able to run my program on a MacMini desktop computer while in my office and a MacBook Pro laptop computer when traveling. At some point they discontinued that feature so I had to buy a brand new MacMini in 2020 running OS 2018 to continue running the old software on my desktop which is currently running Mojave 10.14.6. Laptop is running the same. I'd like to upgrade my MacMini OS, but to do so means I have to stop running the software on my desktop and move it to my laptop. With all the glitches that software runs into, I tried installing it on the laptop first to make sure it will run and I am unable to. I'm afraid if I discontinue it on my desktop and try to run it on my laptop it still won't work, although it used to work on both, just not open at the same time. If I disable it on my desktop and still am not able to reactivate it on my laptop, will I be able to reactivate it on my desktop? There is nobody on the phone system that will take my call for this simple question without wanting a credit card in advance!