Event discrepancies between Zaraz and GA4

We’ve implemented Zaraz to track google analytics events on our website, but there seems to be a massive difference between the “Track” event count in the zaraz monitoring panel and the event count in GA4.
This is happening for all event, but in particular the ecommerce “Order Completed” event in zaraz is about 3 times less than the “Purchase” event count we can see in GA4. Do you know what could be causing this?