While there are many sites claiming to offer a "crack" or "keygen" for Bandicam 4.6.3, these downloads are and are often used as fronts for phishing, spyware, or malware.

For a walkthrough on how to safely download and set up the official software, you can watch this guide: If you'd like, I can help you find:

for specific Bandicam versions to ensure they work on your PC.

(like OBS Studio) that have no time limits or watermarks.