FxSound transitioned to a completely free and open-source model in early 2022. There is no longer a "Pro" version that requires a paid subscription or license key.
Official GitHub Repository (for the source code and open-source releases) fxsound-pro-2-v1-1-16-tam-catlak
Instead of using a potentially dangerous "cracked" version, you can download the for free directly from the source: Official FxSound Website FxSound transitioned to a completely free and open-source
The current official version is much newer than 1.1.16 (versions like 1.2.x are now standard), featuring better stability and new language support. How to Get it Safely fxsound-pro-2-v1-1-16-tam-catlak
Downloading files labeled with "tam-catlak" often exposes your computer to malware, ransomware, or spyware bundled with the "crack" file.