need help on spip installation error on my hosting

I have installed Spip on my hosting at https://www.seekdotnet.com

it seems to be Installed perfectly, but the the private space seems to not loading properly. some icon is missing.

Also i get very frecuent "403 Forbiden" messages at random times.

Sometimes a refresh fixes the problems.

this is on shared srver environment

does this have to do with the session error ?