It sounds like your site’s credit card transactions and PayPal transactions are treated differently by Google Analytics 4 (GA4). All the credit card transactions are recorded properly but PayPal ones aren’t, even though the data layer seems to be properly setup. You’re guessing it might have to do with the order of events, such as the data layer operating before the Google analytics tag loads in. But right now, you’re just not sure why GA4 isn’t tracking the PayPal transactions correctly.