Homestead nameserver settings somehow changed

Our website cannot be found on the internet with a web browser but our email seems to work.

I checked the Homestead nameserver settings which somehow changed to point to elsewhere than Cloudflare specifications. I attempted to change them back to the specified Cloudflare specs, but Homestead returns the message "One or more of the nameservers you entered (rosa.ns.cloudflare) cannot be verified as an accurate nameserver. Please double check your entry, and if you have any questions contact the registrar to which you are attempting to direct your domain."

Help!