Hi Robert,
Please check under Help menu, you will receive a similar option to Sign Out as show below in the screenshot :-
Image may be NSFW.
Clik here to view.
You can Sign Out from your current Adobe account & then Sign In again following the same steps :-
Image may be NSFW.
Clik here to view.
Let me know if you are able to locate the Sign In & Sign Out option.
Regards,
Aadesh
