Go to your Surfshark account > VPN > Manual Setup > Credentials ~ https://my.surfshark.com/vpn/manual-setup/main
Download the attached surfsharkvpnauth.zip and extract it with winzip, winrar or 7-zip.
Inside the .zip will be a file surfsharkvpnauth.
Copy your credentials from the surfshark website into the surfsharkvpnauth file.
This file should only consist of 2 lines:
With an FTP tool send the surfsharkvpnauth file to a HDD (media/hdd) or USB device (media/hdd)
Start SurfShark Manager plugin on the enigma2 box.
Press Menu button on the remote control.
Green button/Import config.
Your Surfshark credentials will automatically be read from the surfsharkvpnauth file.
Press Exit button.
Press OK button on a location to start the VPN.
If you get a login failure while importing the config, regenerate new credentials in your Surfshark account and start over again.