This is the secret the forums don't talk about enough.
When you buy a used Synology NAS from eBay or a local marketplace, the license is tied to the NAS serial number, not the user account.
Synology actively maintains a database of legitimate keys. If a generic key is shared widely on the internet (often used by unauthorized sellers), Synology can blacklist that key during a firmware update. When this happens, your cameras will stop recording, and you will be locked out of the system until you purchase legitimate licenses.
Here is the truth:
If you need 4 or more cameras, stop searching for a free lunch. Buy a 4-pack license from a gray market reseller for ~$90, or switch to open-source software like Frigate.
Your security footage is too important to trust to a cracked surveillance system. Secure your home, not your hacker’s wallet. synology surveillance station license free free
Some older versions (pre-8.0) allowed more than 2 free cameras on certain models, but this is not recommended due to security vulnerabilities and missing features.
Synology Surveillance Station is a professional tool, and the license fees reflect the reliability and support you receive. The "free" version includes This is the secret the forums don't talk about enough
Contrary to popular belief, Synology Surveillance Station is not entirely pay-to-play. When you install the package, you are granted a base number of free licenses depending on which NAS model you own.
For many home users who simply want to monitor a front door and a backyard, these two included licenses are completely free and sufficient. You do not need to buy anything extra to use these. If you need 4 or more cameras, stop