Offline & Wi-Fi

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• ShellyShelly keeps going offline or won't connect to Wi-Fi (incl. FRITZ!Box): settings that actually helpShelly devices need a stable 2.4 GHz Wi-Fi: 20 MHz channel width, channel 1, 6 or 11, WPA2 (AES), no band steering and enough signal. On a FRITZ!Box that means: fix the channel, WPA2 instead of mandatory WPA3, check PMF and let devices talk to each other. Only then network reset and re-adding.Gen2/Plus, Gen3 and Gen4 (Wi-Fi devices); the principles also apply to Gen1 · 2026-11-03