Hi all new in town hope I'm in the right place and hope you can help.

I've been jailbroken since 6.0 but ran into problems in the last week after using a audio boost app on Cydia witch pushed my volume to 200% no sound was on at the time but now I've lost volume down function and my on off button seems to have stop working. So I thought I'd reset and rejailbreak. After the reset I tried to restore from iCloud but got asked to enter apple I.d password for a random apple I.d the I.d is [email protected] I had different apps from cydia etc anny help would be great thanks