"Invalid Certificate Signing Request" error prevents certificate renewal on Apple Push Certificates Portal site

When attempting to renew a certificate after December 18, 2023, an error may be displayed, preventing the renewal of the certificate. It seems that repeating the process multiple times can occasionally lead to success, indicating that there is no issue with the CSR file. This occurrence has been observed in multiple MDM services, including Intune, Work Space One, and various other MDM vendors, suggesting a malfunction with Apple's servers. We hope that this issue will be promptly resolved and fixed.

Although unrelated to the previous issue, when pressing "Manage Certificates," it redirects back to the login screen instead of returning to the certificate list page. Please fix this so that it returns to the certificate list page.