Tickets are not fetching all of a sudden

Tickets are not fetching all of a sudden

I do not know, I have tried to call on the phone for my problem that support emails are not creating tickets all of a sudden, it was working alright, but one day at night I checked why the organization having support emails and i figured the tickets are not working

I am using the zoho desk and I tried to work around but nothing possibly there even you can not see the log file. 

Please do help us if anyone can aproach the zoho....