I do not receive emails from customers

I do not receive emails from customers

Hi, sorry to bother you.
I currently use the services of your Zoho mail.
to the following email address: admin@hpsco.vn
and my inconvenience is unable to receive any mail from my client.

I have the dns config domain as the direction guidance

The MX record của shouldnt look something like this domain:
Host / Domain

@ / Mx.zoho.com. / 10
@ / Mx2.zoho.com./ 20
@ / Mx3.zoho.com./ 50

And I also tried to send mail to yourself, but what I want is not yet comfortable appearance.
Please support me. thank you