Why can't I sign in?

Check these first

• Your password is sent exactly as typed, including capital letters and any space you did not mean to add. Check that caps lock is off, and try typing it rather than pasting it.
• Spaces either side of your email are ignored, so a stray space there is not the problem. A misspelled address is.
• If you changed your Login Email in Settings, the confirmation there says to use the new address next time you sign in. The old one no longer works.
• Open the sign-in form from Log In at the top of the sales page, or go straight to /login, and make sure the Sign In tab is selected rather than Create Account.

If you cannot remember your password

Forgot Password? sits just under the Sign In button. Type your email in the Email field first, then click it: with the field empty you get Enter your email first, then click Forgot password. instead. When the request goes through you see Password reset email sent. Check your inbox.

The full walkthrough is in How do I reset a forgotten password?.

If you have just created your account

Create Account signs you in straight away, so there is no confirmation email to wait for before you can use the app. If you have since signed out and cannot get back in, sign in with the exact address you typed on the Create Account tab and the password you set there.

A new password has to be at least 8 characters. As soon as you type a shorter one, the form shows Use at least 8 characters. under the Password field, and the Create Account button stays greyed out while it is shorter than 8 characters. So the password on your account is 8 characters or longer.

If it says Accounts aren't configured on this server yet.

Accounts aren't configured on this server yet. is a problem on our side, not yours. Nobody can sign in or sign up while that message shows, and Forgot Password? does nothing.

Nothing in your browser will fix it. Try again in a few minutes.