Need to revert to old site, or re-apply the zoho add

I started deleting the zoho adds on the bottom of the pages, and didn't really think anything of it because the editor was allowing me to. Unfortunately, it seems the site is now requiring me to list under a sub domain - not what I want. I assume this is because I deleted the zoho add?

Is there any way to re-apply the add to the bottom of the page, and get out of the sub domain - per the free hosting plan? Or, can I simply revert back to the page I had published just yesterday? My own domain was used on all of my pages, until I deleted the add - and can't seem to revert those changes. Also, why is this so secretive?

Thank you for the services, as i'm very appreciative of the free hosting with such a small add at the bottom. Please help.

Thanks!