Push notification not working

I followed the instructions on http://docs.ionic.io/docs/io-quick-start to start a new project that is supporting io services (users, deploy, push and analytics) but push notification is not working and keeps giving me “WebSocket connection to ‘wss://push.ionic.io/dev/push’ failed: Error during WebSocket handshake: Unexpected response code: 503”

I didn’t change anything in the code, just put the App Id, api keys and gcm_id for Android

Please advice

I’m having the same 503 code using ionic analytics. I went to ionic.io dashboard and I’ve seen this following message:

Notice: Access to the Ionic Cloud dashboard and API services is deprecated and will no longer be available to existing Cloud users as of January 31, 2018. In order to continue to use our services, you’ll need to migrate to Ionic Pro when it’s released. If you have questions or concerns please email us at ionic-pro-info@ionic.io.