Action Needed: Website Push Certificate Expires in 30 Days. Your Website Push Certificate will no longer be valid in 30 days. To generate a new certificate, sign in and visit Certificates, Identifiers & Profiles.
If you run a website that send browser push notifications, you have most likely received this email from Apple reminding you that your push certificate for Safari is about to expire. I've been receiving the same email for several years now, but every time I scratch my head wondering how do I do that again.