[MPWR]

First off, you're central locking isn't working. First place to look is your fuse box. If that's not it, there are probably other things to check- but it should be fixable.

The valet key will not mechanically fit into the hatch lock or the glovebox lock. If the key fits into the hatch lock, it's not a valet key. If it just doesn't fit, then a new (master) key blank may solve that issue.