Instead of searching for elusive activation keys, you can use the official free version of iTop VPN , which is widely considered one of the more generous free plans available.
Important points
Upgrading with an activation key unlocks the following benefits over the base free version: Feature Free Version VIP (Activated) Version 700 MB per day Unlimited bandwidth Server Count ~17 servers 3,200+ servers in 100+ locations Streaming No Netflix support Dedicated Netflix, Disney+, and Hulu servers Simultaneous Connections Up to 5–8 devices Advanced Tools Limited security features Split tunneling, Ad-blocker, and Static IP iTop VPN Review: Is iTop Privacy Friendly? - Security.org itop vpn activation key free