Video overview
Renaming a Page from the Pages editor

Hover the right side of the current Page Title until the '…' icon appears, tap to open the dropdown menu
Tap 'Rename'

Current Page Name shown with
EXAMPLE
pillEdit the Page Name (in this screenshot it is for a Gallery Page)
Edit the Page URL, the unique address of this page, an error will be shown if it matches an existing page
Tap 'Done'
Rename from within a Page

Tap on the Page Name to edit
Edit the Page Name (in this screenshot it is for a Custom Page)
Edit the Page URL, the unique address of this page, an error will be shown if it matches an existing page
Tap 'Done'