Go to onesignal.com  and login. (Credentials are stored on a shared spreadsheet in IT. Inquire for the current password/login combo)

Select GEN or CO:

Then click Settings:

Then check the platforms to see if (1) they are active. Also, check the (2) expiration dates and take note of them. If there are any (3) warnings, they will appear to the right.

If the platform has a green active message, then push notifications can be sent to subscribers on those platforms.

If a platform is marked inactive or is blank, then push notifications can't be sent to subscribers on those platforms until they are set up and a version of the native app is created to work on that platform (if applicable).

If a platform is marked expired, then push notifications can't be sent to subscribers on those platforms until the platform has been re-certified.

Click here for a step-by-step guide to recertify iOS applications.

Click here for a step-by-step guide to recertify Android applications.