won't allow changes to be saved
When I open a saved document and edit it, Pages dialogue box says I don't have permission.
Mac mini, macOS 13.5
Did you create and save the document in question?
If so, did you set any specific persons/accounts to have editing permission with this document?
Did you include yourself in that list?
Are you currently logged in to the same account you used earlier?
You may be able to open a new, empty document, then return to the one giving you problem(s), select and copy the entire contents (all at once, or in blocks by type), then Paste that content into the new empty document, edit the new doc as needed, and save that.
Regards,
Barry