Hello!
I'm running into an issue where I'm seeing delivery failures to iOS endpoints only with the "Platform application credentials are not valid" error. This is for our app that's been in the app store for years. I've cleaned out all my certs, renewed them, uploaded them, and updated my AWS SNS platform creds to the new .p12 file . I have double confirmed all the certs expire 1 year from now. I've also confirmed that I created certs for production level push notifications and app distribution.
This week, I managed to get push notifications working twice. On Day 1, I go through the renewing certs, etc., test push notifications on a variety of iphones, then wait until the next day and notice delivery failures due to bad platform credentials. On Day 2, I go through the same steps to the point where push notifications are working again. Then, the next day I see delivery failures due to the same reason. After that happens the platform is disabled and push notifications fail to be delivered.
In both cases, something has happened overnight that causes AWS SNS to think the APNS certs are invalid. Has someone experience the same thing?
Thanks,
Denis