The Analytics Edge connector for Facebook Ads requires an update to v3.4.0 before May 14th, 2019. This release implements the latest Facebook API version which includes some changes to the conversion metrics. Specifically, the release includes a reorganization to the the new standard events (like App Activations and Purchases). Some old, unused metrics have been removed and others have been added. If you were not using any of the old metrics, your reports should run, but you may notice some columns have changed to new names more consistent with the standard event terminology.