Hi Clareens,
Thanks for posting your concern in the forum.
I'm sorry to hear about your PAYG not calculating for your pay runs. Generally, PAYG is set from the Pay Items instead of the employee card. I recommend checking all the Pay Items connected to the employee to see if those pay items are set as tax exempt.
I recommend reading through this article, Setting Up Pay Items. This will provide more information about the Pay Items of MYOB Business.
Let us know if you require any further assistance.
Thanks,
Genreve