How To Comply With EU Privacy Changes to FB Messenger?

Significant changes on FB/ Instagram this week, as messaging features become disabled - some for rebuilding in compliance with regulation, some others likely to disappear for good. As national governments increasingly legislate against globalised big tech, regulatory divergence will force platform providers to either localise service offerings or potentially withdraw them altogether. Important especially for anyone how manages employer fb pages. H/T to brainfooder Martyn Redstone for the share in the fb group.