NAS model?
DSM version?
Verify network settings are correct
- IP Address & mask
- Default Gateway
- Use a public DNS such as 1.1.1.1 (Cloudflare), 8.8.8.8 (Google), 9.9.9.9 (Quad9)
Sync the NAS with a public NTP server.
Control Panel → Regional Options → Time
If running DSM 7, then follow FAQ 31: Reset / Reclaim PMS on DSM 7 (Not Authorized - Locked Out).
