MYOB desktop version

I've just been advised that as a loyal user and recommender of MYOB since the 1990's, because my serial number is a "professional partner"  serial number it will be cancelled and my client's data files will become "read only" meaning I'll be unable to provide my bookkeeping services any longer unless I upgrade them all to "online".

My clients have specifically instructed me that I am not to put their data online.  To add insult to injury other clients who have the desktop version V19.16 will be able to continue using their data files and confirm when required as they're not "professional partners" and their serial numbers arent affected

Has anyone else been advised who needs to remain active and on the desktop version