Weird issue after wrapping

Hello, I projected my base mesh onto my scan with great results. However, afterwards I am unable to subdivide or work on my mesh. My curser does not give me any focal shift, i cannot sculpt, and I am only able to rotate the model. Any idea? Help!

I figured it out, it was due to having part of the mesh masked. Im an idiot!

Sorry for the late response. Good to know that you solved it!