Why isn't my Paladin resurrecting my guard droids?

[Metathron]

I don't know why the paladin won't resurrect them, even though I find it doesn't make sense to me that should be able to do use that with plants and mechanical units.

Re: the ogre, the same thing happened to me, so the second time around I tried a different tactic. Namely, I surrounded him with my dragon's wall, so he spent all of those action points on breaking the wall, which he did not succeed in, so another unit had to pitch in.