Different versions have different Number heading functions

[pinkmanChen]

Why does the latest version have no Number heading button when editing the page？

[Dave Mathijs]

Hi @pinkmanChen Welcome to the Atlassian Community!

Numbered headings are not native to Confluence Cloud, so you must have been using a third-party app for this. Do you happen to know which Atlassian Marketplace app you're using for numbered headings?

[Zoriana Bogutska_Kolekti-Adaptavist_]

Hi @pinkmanChen 

Yes, as Dave said, you can have a numbered headings feature only if you use an app from the marketplace. 

So, if you don't have it now, probably your Confluence admin stopped the app's license. 

You can ask him to activate it again or install a new one (e.g. Content Formatting Macros, Numbered Headings for Confluence, etc.)