Stop the frustration with these proven, systematic steps to get your hub back online.
The Aqara M2 exclusively requires a 2.4GHz network; ensure your router isn't forcing 5GHz only.
Your router must allow mDNS and multicast traffic for the hub to communicate with Apple Home.
Outdated firmware or a pending app update can silently break pairing and cause persistent connectivity drops.
If all else fails, factory reset the hub to clear corrupted cache and restore factory defaults.
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