In case you are experiencing issues while connecting with PureVPN, resetting your network settings is a viable option to resolve them. In order to reset network settings on a Linux device, please follow the steps below:
Open Terminal and type in these commands in order to clean the firewall and DNS rules:
sudo iptables -F INPUT
sudo iptables -F OUTPUT
sudo iptables -P INPUT ACCEPT
sudo iptables -P OUTPUT ACCEPT
sudo systemctl restart NetworkManager
Reboot the device.