Not receiving emails

Hello,

I tried to set up Zoho Mail so that I could also receive emails in one of the apps on my phone. However, I seem to have changed something which has made it so that I'm no longer receiving emails. Are you please able to see what has been changed and kindly change it back to the previous settings so that I can receive emails? I should note that I did this last September, just in case this helps when finding the exact change that was made.

Thank you very much for your help.