oh, right! so, there in the nice dark house, but dont want to come out into the run? either the covered part or not?
i cant think that having food inside is whats keeping them in, after all they are pretty inquisitive animals (i have a heck of a job going in my run because they make a break for it, i spend ages chucking them back in!)
Did they come from somewhere where they were inside anyway? mine were shed reared, so they hadnt seen daylight until i got them.
It does sometimes take them a while to realise they can go places, try physically (but gently!) putting one of them through the pop-hole out into the run, once she knows she can go out there she should be happy with it, and the others will follow her wanting to know where she has gone