Not Tracking Revenue by Keyword

I’ve implemented a solution to get our PayPal IPN notifications to report sales to Matomo Matomo 3.8.1 based on this guide: HowTo: Paypal tracking via IPN script - #3 by carlosv

These are being tracked in the Goals->Campaigns report, but when you click through into the keywords these are being lost.

For example, I know that sales have come in through the keyword “msap-nl-18022019” as this was correctly recorded in the visitor log.

Any ideas?



ps: Have combined our screenshots as can only upload one image…