Device discovery and connection

Checks for Nearby Sync style discovery; cloud account pairing follows Cloud Sync [TBD: device list UX].

Nearby: check first

1. Same LAN/reachable network, both devices online.
2. Same sync mode on both sides—see First-run troubleshooting.
3. Not blocked by VPN, guest Wi‑Fi isolation, or firewall [TBD: discovery details].

Next

If unstable: Sync delay and failures and Sync overview.