The risks associated with "free" license keys found on third-party websites are significant. Most sites claiming to offer TG Pro license keys for free are distributing "keygen" programs or cracked versions of the app. These files are notorious for containing malware, adware, or spyware that can compromise your macOS security. Furthermore, TG Pro uses an online activation system. This means that even if you find a leaked key, the developer can easily blacklist it, causing the app to revert to trial mode or stop working entirely.
If you're looking for legitimate ways to use TG Pro without paying upfront, here’s an ethical guide: