OK
1. you have seen/shown us, the crossover has a blown/burnt part. It must be replaced. You can get the crossover board out, that’s how it got in, then get new part from parts express, then ____ who removes/replaces the part. Do you know anyone who can solder? You could easily mail the crossover board to _____?
2. woofer glued: I was wrong: looks like the woofer was previously removed, the sound seal (round foam or rubber ring) was not replaced, so they glued it back in. You should solve that problem when you put the woofer back in: a continuous seal to prevent any air/sound in/out, then screw, not glue the woofer back in.
3. to prove the removed woofer is ok, you can turn the volume all the way down, touch speaker wires to the two tabs on the loose woofer, turn volume up very slightly, see/hear it move, means voice coil is still working/ok. Or, remove other speaker’s woofer, make some wire jumpers long enough for trial.
IF woofer cone does not move, that means the woofer's voice coil got melted. If so, you could ship the woofer to Miller Sound, or replace them both with something parts express recommends.