Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Greetings!
This is Tin, sorry to hear that you can't sign in to your account, and now you can't check your Billing to see why MS didn't receive your payment. No worries, I'll do my best to help. May I know what's the error message are you getting when trying to sign in your account? Have you tried to reset the browser or use other browser or device? Are you getting the same error?
Will wait for your response.
Thanks,
Tin