Can't sign in to android app when my account is linked to Google?
When I signed up on the main site, I chose the option to sign in with my Google account. But when I downloaded the Android app, there is no option to sign in with google, and when I try my login info for Google I get an Authentication Failed error message.
in order to use our mobile site http://todoist.com/m or other third-party Android apps, please log into the full Todoist web-app, go to Preferences )gear icon in the upper-right corner) -> Account and use the "Edit" link in the "Password" section to set a password for your Todoist account.
From now on, you will still be able to log into the web-app with one click using your Google Account, but for mobile access, you can use your GMail address in combination with the newly set password.