How deep is your tank? Based on the last picture, I would say the issue is lighting. Those zoas are far to far below the surface for the PC light penetration. I've kept zoas under PC lighting, and they always had to be withing 6" to 8" of the light (not the top of the tank, the actual light). Just because the tank is lit up doesn't mean they are receiving enough par to support them.
Also, if they've been closed up like that for three months, chances are good they are goners - as stated, touch em and see what happens. If the polyps are solid, get more LR and move em up towards the surface.