From JumpBox Documentation Wiki

Can I log into the JumpBox on the virtual console?

Yes, you should be able to log into the JumpBox on the Virtual Console. Sometimes, depending on your virtualization platform, it can be a little tricky.

• In general, you just have to click on the gray JumpBox Console screen to capture or focus your input onto the JumpBox.

• Then press ALT+LEFT ARROW or ALT+F1 and you should see a login screen.

• You can now login as the admin user with the password you chose during JumpBox configuration.