If you are tech-savvy, you can use open-source protocols like WireGuard or OpenVPN to build your own private VPN on a home router or a cheap cloud server. Set up virtual private networks (VPNs) - Chromebook Help

If you're looking for a real Kozmik VPN password, I can't help with that — but if you've lost yours, try their official support or password reset feature. Want another fictional angle instead?