If you have special file name as your default page or your default page file name is not list in our default page list, you will need to set your default page on your site manually. Please follow the instructions below to set the default page on your site
1. Login to your hosting control panel
2. Go to Websites --> the specific site --> Manage Website --> Default Doc:
3. On default page setting page, add your default page file name to the default page setting list, then click 'submit' button.