I’ve recently (last year) moved from a register.it to an Aruba domain as the latter was offering a much cheaper option. Aruba is a bit more complicated to setup as we need to configure the DNS entries ourselves (comparing to register.it where the setup was seamless, or at least so I remember). After initial success following the guide, returning on my website some time later, I’vea been met with the error NET::ERR_CERT_COMMON_NAME_INVALID.