Before you can create any clients, you need to send your public ssh key to our forwarding server. That public key will be used to encrypt the tunnels.
And that's it, your key pair has just been generated. You will need to put your private key on your servers and you need to upload your public key (with a .pub extension) to us.
Instructions on how to create ssh keypair on Windows using putty can be found here.
If you are still unable to create an ssh key-pair, we can create it for you. All you have to do is click on the Generate public/private key pairs button and you will receive your private key. Then, you can copy that key and save it somewhere safe.