I am managing a number of different accounts for different customers.

Today I am experiencing problems with regards to 2-Factor verification.

The accounts with 2-Factor verification via Google Authenticator work fine. However, the accounts that have 2-Factor verification where I receive the code via SMS now ALL have the same problem.

Here is what to do to replicate the problem:

1) Goto the Zoho mail login page at  https://www.zoho.com/mail/

2) Input my email and password and click "Sign in"

3) I receive the sms with my 2-factor code

4) On the Zoho login page, the button has changed name to "Signing in", but the page does not refresh.

5) I have nowhere to input my 2-factor code, and hence I cannot login to my account.

Any ideas?