Polyvore unable to use app

With the Polyvore App the app won't let me sign in at all. I have a photo of the error if you can email me. I already have a login and the app gives me an error even for saying I forgot my password. It says the app hasn't been created yet. That's impossible because I've had the app before for over a year and created tons of sets. I really want to be able to use the app.