If you are having troubles signing in to Method with your Google account, you may need to re-authenticate by following these steps.
Make sure you are signed into Google.
Navigate to https://security.google.com/settings/security/permissions to see Apps connected to your Gmail account.
For Filter, click Sign in with Google.
Click Method on the list.
Select Delete all connections you have with Method.
Now that you have deleted your Method connection, you can Sign in with Google again.