Terrible experience trying to contact customer service! The only "contact us" is designed for very basic feedback (what you liked or didn't like). No easy way to actually "contact customer service!" Other than that, the app, usually works, it's very slow between screens, and sometimes the order gets an error message after it's submitted, but it still works. I definitely prefer it to ordering at the counter, even though it's more time consuming. Hope for a better app & experience in the future