• Select your sessions and edit properties.
• Go to SSH2
• Under Authentication select Password and then click the Properties button to the right
• 2023-08-26: They have a credentials manager now so this needs a

%HOME%\AppData\Roaming\VanDyke\Config\

With session files in the Sessions folder.

If you get a message about key exchange you might need to add this line to the config file for the session.

S:"Key Exchange Algorithms"=diffie-hellman-group1-sha1

I believe you could do this globally too.