Thanks for reporting this. We were using a dummy search to verify the connection, but version 1.1.4 changed the HTTP response code for "No key found". I've changed the verification code to issue a "stats" op instead, which should be more compatible. I've also added proper handling for the new HTTP response code and error messages.
The changes will be available on version 2.5, which we should release as soon as Apple let us upload iOS 7 compatible apps.
Also thanks for your suggestion about the settings UI. Can't make any promises but we'll look into it.