Email

[Pet1]

My wife changed her email and the email she used to set up her account is no longer valid and now she can't log in to update her payment information 

[Yummy]

Email is just a login ID. PM does not care if email is no longer active.

She should be able to log in using her old email/password. Try with clean browser, clean cookies, use incognito mode. Do not start changing password right away.
If she still cannot log in, open a ticket for agent to assist you and at the same time change her email on file.

[softech]

@Pet1

please ask her to try login again using Incognito mode

if she was using the PM app earlier, uninstall it first.  Then go to the phone's device browser to clear cache.  Then restart the phone and reinstall PM app and try again

If nothing works, please open ticket with PM support by direct message

       https://productioncommunity.publicmobile.ca/t5/notes/composepage/note-to-user-id/22437
**Monitor your Community inbox (envelope icon on the top right) after ticket submitted, CS Agent will reply to you there