1) Session time out is set through the php.ini file, see the following web master world post:
2) security assist will only protect your pages from unauthorized web access by username and password. server security is a whole other subject though that goes beyond the scope of this forum.
3) I have created a support ticket so we can look into this issue further.
To view and edit your support ticket, please log into your support history:
If anyone else is experiencing this same issue, please append to this thread.