Renew iOS APNs in order to download the .p8 certificate


I need to download the .p8 certificate generated when the iOS APNs certificate has been enabled. The problem is that I can’t do it from the ios developer console at the moment: I can only do it at the creation time.

So my question is: how can I revoke the existing ones and renew them without crashing notifications feature on my app? What’s the correct flow?