Issue Description
When uploading the 'JAMFSignedCSR.plist' file to the identity.apple.com website to renew the APNs token, it presents a message that says:
"You have uploaded an invalid file type. Supported file extensions are .csr, .txt, .rtf"
Troubleshooting Steps
Rename the .plist file so that it has a .txt extension.
Then attempt the upload again to proceed with the renewal process.