At the top of the page, there's a lock icon (close to the page title). It may have some active restrictions which prevent you from editing the page. Or as Anvesh already explained, it may be the space permissions.
In case of page restrictions, someone with edit rights will have to update your permissions.
If you want, you can also go to space settings > permissions > restricted pages and see if that page is in the list and has active restrictions.
Hi, Confluence collaborators! As part of #Confluence-Collaboratory month, we’ve created a very special Mythsbusters segment, where we're dive into an interesting myth and uncover the truth behind i...
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