Thermostat shows Wi‑Fi or cloud icon with a cross; remote control via smartphone app does not work, but local control is fine.

Safety first: Network troubleshooting only.

• Check internet: Confirm that other devices can access the internet.
• Restart router and gateway: Power cycle both and wait a few minutes.
• Update app and firmware: Ensure the Tydom app and gateway firmware are up to date.
• Re-login: Log out and back into your Delta Dore account in the app.

If remote access remains unavailable while local control works, contact Delta Dore support to check for server or account issues.