Unhappy [Q] Sound Level alert Not working

I'm using xperia U (JB). My music volume is stuck on half when i plug the headphones. as i searched for the issue problem is caused by sound level alert apk. it doesn't show the popup window to say okay so volume is stucked at half. I tried replacing the apk file and tried some xposed modulesbut nothing helped... please give me a solution to this problem (don't say to re flash the ROM im bit stuck with studies so i don't have time to flash )
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