I'm unable to upload a PEM certificate file to the Zendesk Chat dashboard as the certificate was issued after 27th Jan 2022. I get an error "PEM file is invalid."
I believe this is due Apple issuing APN certificates with a new Intermediate certificate, as explained here: https://developer.apple.com/support/expiration/.
If you plan to send notification requests or passes with certificates issued after January 27, 2022, you’ll need to download the Worldwide Developer Relations G4 sub CA, available for download.
The certificate I created prior to 27th Jan works fine (different Bundle ID used for testing). I believe Zendesk needs to install the new Intermediate certificate on their web servers to accept any newly created APN certificates.
Please help! We are about to go live with Chat!
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