Yes, EVA can be used with multiple accounts!

If you open the settings page in EVA, you will have two logout options.

Quick

A quick logout just closes the session with Frontier's servers, allowing you to log in with a different account. Remember that you will need to authenticate each account the first time you use it with EVA.

Full

A full logout also removes the authentication details, so Frontier's servers will ask you for authentication if you log in with this account again.