You have provided really little information to understand who actually owns the site and under what conditions. Having only access to the admin panel of any site is very little, but for the operation of the site itself, the main thing is the server on which it works and the domain name to which it is registered. If you do not have access to the hosting company serving your site, you will not be able to continue the domain name registration after the registration period has expired, and you will also not be able to pay for the hosting services for the server itself, and after its term expires, the hosting company will disconnect it . Also, in order to configure the site and the correct operation of its components, it is sometimes necessary to configure the server itself, especially when updating or adding new functions, and for this you need to have access to the admin panel of the site management on the hosting that serves the site. Simply having access to the admin panel with site management is very little and such access is also different. He can have the rights of a super administrator, or he can have the rights of a moderator or just an administrator with privileges that differ with access to certain functions with site management and may be limited to the functions that the super administrator has.