I set up a relationship class in ArcGIS Pro and created feature services for both the polygon feature layer and the related table. In ArcGIS Pro, I can access related records through the pop-up and attributes for each polygon feature. In ArcGIS Online, I cannot access related records.
On the REST services directory, the relationship is listed (between the polygon layer "Projects" and the table "Inspections"), so it seems to have come through in some manner when the feature services were published, but I still cannot access them in my Online map. Any ideas for troubleshooting?