Why do I see a "This app is blocked" message when connecting to Google Drive?

There is currently a known issue that might prevent users from accessing Google Drive in LumaFusion. We are working with Google to resolve this as soon as possible. For exports, we suggest downloading the Google Drive app, then use the Share & AirDrop export destination in LumaFusion. After the export is done writing, select Google Drive from the Share Sheet (see image below).