Can't move certain vertices in a mesh

For some reason, while doing retopo, I noticed I couldn’t grab certain verts, any idea what may have caused this? Is there a fix? Also, if you try to move the mesh (in edit mode) it massively distorts the model…

When you go to edit mode, I have selected some of these verts, so you don’t have to look for them

cant_grab.blend (993.1 KB)

Thanks in advance for taking a look

P.

You have symmetry turned on for all three axis for some reason:
image

If you only enable it for the Y-axis your mesh will become responsive again. Personally I would delete half and just throw a mirror modifier on there that you apply once your done instead of modelling with symmetry on.

Oh thanks for your time sir!
That indeed did the trick, I only just got back into Blender and was messing around with symmetry. And yes, I was modeling with mirror on.
Thanks again!

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