Not receiving emails - urgent

Not receiving emails - urgent

Hello,

yesterday I opened this Zoho mail account:  Adam@myphotoadvice.com
After setting my website's domain and all the records in my domain's advanced DNS records, including the mx records, I was able to send and receive emails for a short period of time.

after a couple of hours I stopped receiving any emails, and I have no idea why.

Please help me ASAP, I need that email account, since it worked in the beginning I'm counting on it for my business.

Thank you,
Adam.