App suddenly lost billing settings

[PromptAppointment]

I need someone to help me with my app promptappointment, all of a sudden it reverted back to the free pricing tier when I have billing enabled and nothing is wrong with my credit card. This is a production app and I need help asap. Thanks!

[Alexander Trakhimenok]

We have the same issue, GAE app: myclassesapp - all our websites are down :(

[Luke Stone (Google Cloud Support)]

We see the issue in billing status for certain AppEngine accounts, we have a root cause and we're working on automatic fixes.  We apologize if your app is down because of this issue.  In the meantime please try the workaround of going to your AppEngine Settings page in Google Developer Console.  

If you go to http://appengine.google.com/ and find your app, you should see a link "Try the new Dashboard".  Click that and then, under Compute, click App Engine.    That ought to fix it, and please respond if it doesn't work.

I see that you have already sent a request to billing support - thanks for that - and for anyone else who needs to contact us about this issue, here's the link:

https://support.google.com/cloud/contact/cloud_platform_billing

This is on the issue tracker here, you can follow along and we will post the root cause here

https://code.google.com/p/googleappengine/issues/detail?id=11615

-Luke