index page

hi i dont know why my forum only can enter with http://forodiy.com/forums and i cant go with http://forodiy.com WHY? Thanks

My index.php is forcing my site to say "yourdomain.com" index instead of saying "website name" or showing a picture of my website icon when i post in places such as skype. It also shows the Xenforo picture instead of my own icon or website picture. Does anyone know how to fix this? Should I...