Just got o Shop Parameters > General > Maintenance and switch off "Enable Store". If you want to be able to see the store yourself while you're logged in to the control panel, then turn on "Enable store for logged-in employees" or add you IP to the "Maintenance IP" list:
Just got o Shop Parameters > Genera > Maintenance and switch off "Enable Store". If you want to be able to see the store yourself while you're logged in to the control panel, then turn on "Enable store for logged-in employees" or add you IP to the "Maintenance IP" list: