LG L70 Wifi problems

Hi, I had Wifi Problems on my LG L70
I downloaded an app that makes my sd card be the main storage, because there was nothing in the settings that makes your sd card be the main storage(internal storage) The name of The app is Int-SdCard write fix When i finished downloaded the app and opened it. there was a fix me and download button at the bottom of the fix me button. it needed root so i rooted my phone, after that when i pressed download button, there was a box that says Downloading and nothing happend.. i press the Fix me button but nothing happend.. Everything was fine Wifi was working and everything else.

So i thought of restarting my phone so the fix would work. But when i restarted it and i turned on Wifi it says Error
I tried Bluetooth still it Freeze All the things that needed connection is all broken. Is there a way to fix this?
I saw some troubleshoots and tried them.

I tried hard reset but no work. Also i checked "about phone" in settings. all i saw In the hardware Information and Software was "Unavailable"

I cant even root my phone anymore due to this, and i dont want it in the repair shop because too expensive, and takes months to fix it.

Phone Number: Unknown
IMEI: Unknown.
IMEI SV: Unknown
Wi-Fi Mac address: Unavailable
Bluetooth address: Unknown

Model number: LG-D370
Android Version: 4.4.2
Baseband Version: Unknown
Kernel Version: 3.4.0+
Build Number: KOT49I.A1408025071
Software Version: V10c-ESA-XX