Transfer to Cloudflare domain problem

I have transferred the domain to Cloudflare, however, I am still be asked to log into my Registrar and change the Nameservers - which are already Cloudflare’s. E.g. to This of course I cannot do! Is there a way to force the change so that Cloudflare as the registrar correctly points to Cloudflare’s nameserver?

That domain is not registered.

A post was merged into an existing topic: All subdomains are not worked after using Cloudflare DNS