If a domain is not renewed before its expiration date, it will be deactivated, and both the website and email services will stop working.
Some domain zones provide a short grace period during which the domain can still be renewed at the regular price.
However, most European domain zones do not offer such a period, so it is recommended to renew the domain in advance.
If the renewal deadline is missed, the domain may enter a redemption state, where recovery requires an additional fee. If not restored in time, the domain becomes available for registration by others.