If you want to disable your domain from your site or store, go to site or store settings in the Actions menu.
Click the pencil button to edit the domain.
Change the domain of your site to any free domain in the
.bitrix24.site zone in the Bitrix24 subdomain tab and save the changes.
The same steps should be performed for the store: change your store domain to any free domain in the
.bitrix24.shop zone and save the changes.