I need help with "my book" on mac, it wont appear after I unlock it

I have been using this 3TB hard drive for a while now, with 0 problems. All of a sudden my WD doesn’t work. It doesn’t launch after I unlock it. Im using Mac. Ive been searching everywhere for a answer but can´t find one. Can anyone help me please?

Hi davidsada92,

After you unlock the drive, does it shows up in disk utility?