Regardles DKIM - Zoho key is not working

Regardles DKIM - Zoho key is not working

I followed the procedure for configuring DKIM in my domain, but the key that I generate in Zoho is not valid in http://dkimcore.org/c/keycheck, where I received the message that the public-key is requiered.

I verified with another tool, different than zoho, https://www.port25.com/dkim-wizard/, and after the key is generated and configured in my dns the http://dkimcore.org/c/keycheck my domain pass the verification procedure.

How can I move forward, it seems that is not my DNS or the configuration of it, because with the second test I can make sure that I am configuring ok my DNS.