Kicker Sum8 OEM Intregration, Any issues????

[xitaliapunk]

I installed a Kicker Sum8 into my 13 BRZ and it seems that after a month (tried 2 different ones each month) they both stopped working right. My faders not working correctly. The subwoofer (installed a KKR L7) is not receiving any signal unless its plugged into Channel 2, but when I do that, my rear 3.5" speaker gets distorted and sounds blown, plus all the bass is going to my rears. All 4 speakers seem to be running into one channel for some reason now, where before 1 plug did fronts, other did rears. It was all working before and now I have nothing but issues, not to mention because I can't keep them plugged in, my audio for my Nav/BT don't work right. I am all confused cause when it was installed I asked a few people and they all said the wiring was right... Anyone else have any issues? I'm in serious need of help, commuting with no music is driving me nuts..

I have Radio >>> WIring to Sum8 >>> Kicker 5Channel >> Speakers.

Also I switched my 6.5 and dash speakers down to a single component system. If anyone needs more explaining thats fine, but I'm boggled why they stop working..