Help with Facebook Ad Manager error – Do not have audience creation permission on one or more event sources

I have managed to work through all the other errors faced today setting up the Facebook ad but I can’t seem to find an easy fix for this one. I have received the error warning – Do not have audience creation permission on one or more event sources. Added an event group which Facebook tells me it has now updated to business assets, but it still isn’t working.

Pixel all set up and working correctly. The person has all the right responsibilities in the added people field.

Help please!