Hi Trenton,
I will try the suggestions and fixes, will let you how it goes.
I did some research and tried these other fixes.
1. I have added a Event Tracking Code (EDT) to the buy buttons of Paypal and Eway. The EDT is added where the user clicks on the buy button and leaves our website from there. This is done to record the button click and send the report to Google analytics.
2. Enabled 'Auto Return' and Paypal PDT (Payment Data Transfer) which transfers the users GA reports.
So, after applying this I got two transactions recently, but both are recorded under direct traffic in GA Aquisition report. Attaching a snapshot.
I am not clear where is the traffic coming from. Any thoughts.