Clean Retina problems

Hi,

I have little more problems with clean retina wp template, sorry but i am only beginner

1: Why not show me pictures on my homepage to my blog? I try Theme options-blog display type on home page – excerpt display type 2…still not working i dont know why..

2: Is it possible to delete in comments the folder website? If yes where can i find this option…

3:Could you advice me with best forum plugin on my page..

4: How can i make more recent posts on my homepage..i have only 5 recent posts to show and i want about 15 is it possible?

THANKS ALL and sorry for my english ??