Lost all my data

I had used Zoho CRM several years ago and logged on a few months ago and verified that my contact data was still there. Today when Zoho asked me to use 2 factor authentication, something seems to have happened along the way and now even after disabling 2FA, I don't see any of my data. I read somewhere in the forum that I needed to upgrade my account to recover my data. I upgraded my account but still no data. Now I have paid and have lost the data. Please help find / restore the data I had in my account. Thanks.

-Satish