>>5934296From the pic you can tell the articulation is there. You could try heating your boatslut's ankles lightly with a hairdrier, that could loosen up the stuck joint.
I got AGP Erica Hartmann on discount, real qt and nice accesories. The hips gave me problems when swapping the legs with the Striker parts, but it as it turns out I wasn't inserting the new legs all the way for fear of breaking them, and heating the parts softens the plastic enough to swap more easily.
So yeah the line has QC issues but it varies a lot between sublines. Always check in-hand photos to get an idea of how it will actually look, promo pics will almost always look better.