Adobe programs locked to previous organisation's single-sign on despite a reinstall

I no longer have access to an Adobe subscription from my previous organisation. I've uninstalled and reinstalled all of the Adobe programs, however when I open Adobe Acrobat Reader, it still prompts me to log into my old organisational account using their login portal instead of the usual Adobe account login portal - "Your organization requires that you verify your identity to continue". If I close this pop up, it will just close the program completely, even though this program is free to use without an account.

How do I get reset it back to the normal Adobe sign in portal or remove this organisational sign in popup altogether?