Old Business Basics Cannot Confirm on MOCA

I have a Business Basics v1.1 offline product.

I use Windows 10 and Chrome and tried activating/confirming but it does not work so I went to online MOCA myob.comfirmation.com but it comes up with ERROR Code HTTP 500.

I then tried using Firefox Mozilla and was able to enter the Serial # and Company # (that were provided in software), but still no Confirmation Code showed, just a blank screen.

Should I expect a code to show on that page? If it does show, where do I actually use it in order to progress?

My internet access is perfect, so I can only presume it is a problem at MYOB's end.

It mentions phoning but the phone number is not available. I am in Western Australia.