If you want to use Tuxler VPN safely, stick to their official channels: Free Tier:
Let’s say you grab a username:password from Pastebin. Here’s the typical lifecycle:
Some may work for a few hours. Most are recycled old accounts or honeypots.
Tuxler offers a legitimate free version with limited features and locations. This is the safest way to use the service without a subscription [3]. Official Subscriptions: