By not renewing a domain, it will stop working and the services associated with it, such as the website and emails, will no longer be available. For .ar domains registered at https://nic.ar, a 30-day grace period is granted after expiration; during this period the domain will continue to function. Domains other than .ar must be renewed before their expiration date.
To renew a domain if you have registered it at https://nic.ar you must follow the steps published at https://nic.ar/es/ayuda/instructivos/renovacion-de-dominio
For domains other than .ar registered at BAEHOST.com, you can renew from the customer area.
For domains other than .ar registered outside of BAEHOST.com, you must connect with the registering entity to manage the renewal.