If you have limits for your store visitors, such as age requirements, Miiduu provides a 'landing page' feature (for advanced and above plans) so your site visitors will see your landing page before viewing your store. 

To set the landing page, a page should be created in advance. Go to Design->Pages-> to create a new page.

Then, go to "Settings"->"Advanced" to select a page as the landing page.

Then, site visitors will see the landing page when they view your store for the first time.