my zoho account can't be used anymore

my zoho account can't be used anymore

hi.


wanna ask about my email in zoho.
my domain name is natakom.com
and my administrator user is hello@natakom.com
currently, when I login using administrator user, then the mailbox is not loaded.
my zoho id is:  53979071

 And I try to create another email which is hendranata@natakom.com. and it works perfectly.

also I attach a screenshot.. please help me to solve this issue..
thanks