No Mailbox! Error message when attempting to verify forwarding address

No Mailbox! Error message when attempting to verify forwarding address

Followed instructions to forward Zoho emails to another email account... in this case, Google Apps mail.  Email from Zoho arrives in the destination email account with instructions to click 'here' to verify.
 
Please advise how to resolve..
 
The following error message occurs:
 

No Mailbox!

Currently you do not have a mail account in Zoho. Visit www.zoho.com/mail once to get a Zoho Mail account and start using Zoho Mail Features.



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https://zmail.zoho.com/mfwdverify.do?mode=checkVerify&DIGEST=4c6df64e247b7dd43c29ccd49e08e84dc89371ac5c76dea2fe9609fa63e33046267c2a2ba7e6a626571914ec01d73f220504fd40ffcd121f0a9c06c89767fcddb2d05b355e143a41e6c8eda511111ae5f9e1f035e113654b03aa9964ac4a1d7b