It's important to buy only legal Synology Surveillance Station licenses. Synology is continuously providing updates to improve the Surveillance Station software. From version 7.1-4056 an online activation is required for adding Surveillance Station camera licenses. Any shared, hacked or cracked license keys will be spotted as invallid by the Synology activation server. To prevent software license problems, you should only buy your license key from registered Synology partners like INNOCAM.
Using a hacked/cracked license or a generator, without purchasing one from know vendors, your workspace can become deactivated without notice, when the next update is run. Buying from respected resellers saves you all the trouble, all the time. Choose your license for 1 camera, a license for 4 cameras and a license for 8 cameras.
The licenses are functionally lifetime and purchased licenses can be migrated. No yearly software maintance fee is being charged.