Can't continue to mail domain setup

Can't continue to mail domain setup

Domain: remont.com.mx


[3,{'st':'REMOTE_IP_LOCKED','e':'Unusualactivity detected from this IP. Please try again after some time.'}]

I've tryied to setup a domain a week ago and the message above appears after verifying the phone number or... after login in. 

Hope you can help me. My client is desperate.