The most common reason for a certificate not showing on the web is due to a deleted appliance make or model used. This will cause the certificate to error when it syncs as the data no longer exists on the web.
When settings are changed on the web, users must reinstall the Commusoft app to ensure they have the most up-to-date database available and avoid any further deleted appliance data being used.
If an app reinstall is required, always ensure the web and the app are fully synced to avoid any data loss. Before data syncs to the web, it is stored locally on the device and there is no way to recover if deleted.