Yes, you can use Two-Factor Authentication.
If you already have 2fa setup on your gameforge account, you will need to remove it first.
2fa register at the end of the command (eg:
/path/to/ninja.x.x.x.darwin.amd64 2fa register -u [email protected] -p gameforge_password)
Get the 2fa secret using:
/path/to/ninja.x.x.x.darwin.amd64 2fa show -u [email protected]
When you create your bot, set your 2fa secret in the advanced settings.
If you already have a bot, you can update it's 2fa secret in the bot settings.
For more information about 2fa, see https://www.ogame.ninja/2fa