In November 2019, Apple released the latest update of their operating system (Catalina) and unfortunately, MYOB is no longer compatible with MACs.

To solve this, there is a default built-in program on MacBooks called Boot Camp Assistant.  This allows MAC users to purchase and run a Windows-10 operating system which is able to download and use the MYOB Software.

For information regarding the Boot Camp Assistant software, please refer to Apple's support page here https://support.apple.com/en-au/HT201468. The alternative would be for you to access and use a Windows PC for the units that require the use of MYOB.