The best way to ensure your license key stays "fixed" and functional is to use the official RedFox trial or purchase a lifetime subscription. This grants you access to the RedFox forums, where developers provide rapid patches whenever a streaming site changes its encryption. In the world of high-definition downloading, a stable, official connection is always more reliable than a temporary, third-party workaround.
The support team behind RedFox AnyStream deserves a shoutout as well. They were responsive to my queries, and their guidance helped me get up and running quickly.
: Many sites claiming to offer "fixed" license keys for AnyStream are hosting malware or phishing Authentication Issues
Summary of why "fixed" keys are often a temporary and dangerous solution to a larger shift in the DRM-removal software industry.