I have Call Blocker by Embware on my LG L39C and until recently it has been working fine. However, a couple of weeks ago it stopped blocking some numbers on my blacklist. When I tried to add them again I got an error message that that contact already existed. Then I tried to delete the contact from the blacklist and add it again. A short time later I got a call from that number that made it through. Uninstalling the app and re-installing it might solve the problem, but I don't want to have to go through the pesky business of adding all the numbers again. Is there any help?