Signing in and guests
The Account needs no separate registration or password: it uses the same sign-in as the game and the Builder. This page describes what you see when you are not signed in, or when you play as a guest.
Signed out
If you open an account page without signing in, the Sign in to see your account screen greets you. The Sign in button lets you sign in with Discord, Google or Facebook, and afterwards you land on exactly the page you were heading to.
One page opens without signing in too: Support, because you can donate without an account.
As a guest
If you play as a guest, you see the You are playing as a guest screen. A guest has no plan, invoices or saved data, so there is nothing to manage. To use your account, sign in with Discord, Google or Facebook.
The Back to the game button takes you back to the game in a new tab. The game you started as a guest is not affected.
When your sign-in expires
Your sign-in renews on its own while you use the Account. If it still expires, the Account switches to the sign-in screen. Sign in again and you carry on where you left off.