KLCK works fine, but only if i wait for a long time after having locked the phone otherwise it just won't appear
Its a big problem because you want to get to klck again shortly after you locked your phone e.g. to control your music
One of the posibilities is if you have your unlocked method in your phone with fingerprint, in this case,many phones(probably yours too) delay the lock for 5 seconds and put a black screen, in this 5 seconds your phone is not locked yet, after this 5 seconds it's locked. Because this Klck is not active until after this 5 seconds.