Customer experience is important to us so we want to make you aware of an issue with the setup of APNs certificate on the new O365 Admin Portal and the workaround solution for it.
The link for setting up an APNS certificate for iOS devices on the new O365 Admin Portal brings users back to the same page instead of guiding them through the set up process. The screenshot below shows the setup link (underlined in red) that has the issue.
To workaround this problem, switch to the old Office 365 Admin Portal. The link to set up an APNS Certificate works from there as expected. The screenshot below shows the link (underlined in red) to switch to the old portal.
We are working to resolve this problem and will update this post once the issue is resolved.
Intune Customer Experience Team