: If you already purchased a key but lost it, use the official recovery page by entering the email used for the original purchase.
Click the or License button (often found in the top-right corner or under the Gear icon/Settings). Paste your license code and click Activate . Important Security & Compatibility Warnings 4K YouTube To MP3 3.7.2.2902 License Key
Instead of using a potentially dangerous "piece" or unauthorized key, you can use the software safely through these methods: : If you already purchased a key but