Hi Mahlon,
I have some questions.
1) What browser are you using?
2) Have you tried clearing your browser’s cookies and cached files?
3) Have you tried using a different browser? If so, what was the result?
4) Have you tried signing in using a private browsing window or incognito mode?
If you try the above and are still receiving the error, please email support@method.me with the user and account details. We will create a case and reach out to you.
-Audisho