Failed to determine sign in methods for email.?

skippingrock​ 

I'm sorry for any issues you had using 1Password earlier today. Our team has implemented a fix for the issue and is monitoring the results. You should be able to use 1Password normally again although some users may need to authenticate again.

Additional information is available on our status page.

If you are still having trouble using 1Password then please let me know. 

-Dave