Move back to old DNS hosting

I have moved back to my old DNS hosting by removing my site (studiopsicologiaabruzzo.it) from Cloudflare. But something went wrong. Can you help me ?
Bye

Cloudflare still returns data for your site, so you seem to not have removed it entirely from Cloudflare, however you have changed the nameservers and that is the important bit.

If you have issues with your current DNS configuration you’ll have to contact your host I am afraid. Cloudflare is not involved any longer.