Yes, you can switch it off, but I was told by MYOB Customer service that if you switch off you will not be able to send Invoice using MYOB email system that was included as part of service with current subscription.
What even more angry us as a customer that MYOB is doing that under 'Security' banner.
I am sure all MYOB subscribers are for Security. But to demand direct debit authority from customers for something that we not going to use is NOT ok.
MYOB should design additional button on email for those who want payment through MYOB system and leave those who doing payment manually as is.
But of course, it is not about security it is about fees that MYOB will apply of $0.25 per transaction +1.8% of total invoice that using their EMAIL system!!