Most European registrars will have limitations on assigning different nameservers within the same DNS in case the new domain was active in Cloudflare before. The reason for this is because our nameservers will always respond to the old domain nameserver values instead of the new pending zone.
The article outlines the move process assuming you have access to the account you’re moving the zone from and the account where you’re moving the zone to. It also mentions that this type of move requires support assistance.
hmm, you may want to share the domain with the community to get more eyes on this and to ensure I’m looking at the correct zone. It is not impossible to move the zone if you don’t have access to both accounts, but you need to have access to the registrar for nameserver changes. Is the screen shot you posted from your registrar?
.it is notoriously known for making DNS difficult . One of those registries which attempts to verify the provided nameservers, which will of course beautifully fail if the domain has been already on Cloudflare and Cloudflare announces those “other” nameservers. Classic