Logger keeps going offline in DeyeCloud

Quick checks

1. 2.4 GHz only — Deye loggers don’t join a 5 GHz-only SSID. If the router hides 2.4 GHz behind the same name, that’s often the culprit; expose a 2.4 GHz SSID.
2. Signal — a logger buried in a metal switchboard loses signal. Move it 20–30 cm, or add a repeater / use the Manually Input Fixed IP option on weak links.
3. Router password changed? Re-run the logger setup (connect to the logger hotspot → 10.10.100.254 → Wireless Settings) and re-enter the new Wi-Fi password.

Re-pair the logger

Follow Connect a logger to Wi-Fi & DeyeCloud. On the Device Status page the logger should report connected to both the router and a cloud server (one of the two servers is enough).

When to switch to 4G

If the site Wi-Fi is genuinely unreliable, stop fighting it and fit a 4G logger.

A brief nightly offline window can be normal (router reboot / no PV at night on some setups). Persistent daytime offline is what to chase.