A family of Microsoft word processing software products for creating web, email, and print documents.
Dear Mike_Compas,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, please don’t worry, we can work together to narrow down and resolve the situation.
In Word 365, the "Save A Copy" saves the document under a new name, but the original stays open for editing, not the new one. And the "Save As" You save the document under a new name, and the new file stays open for editing.
As you mentioned, "I don't have "Save as" button " I suspect in your Word document there is an autosave button in the top corner that has switched on. Turning that off seemed to appear Save as" button in Word document.
Your understanding and patience will be highly appreciated. I hope that you are keeping safe and well!
Sincerely,
Waqas Muhammad