FreedomPop Galaxy S3 SPH-L710 Issues

Hi, Need some help. Just got a FreedomPop Samsung Galaxy SIII model SPH-L710 with Sprint logo on the back. It's running Android 4.4.2. I am unable to use bluetooth on this phone. Every time I attempt to open bluetooth I get an error message "Unfortunately, Settings has stopped" . Then I must press OK to exit the error message. Bluetooth remains on but whenever I attempt to scan the same thing happens every time. I can not connect to my Samsung Gear 2 Neo or my bluetooth keyboard or my car radio with built-in bluetooth for calls or music. If it doesn't find any bluetooth devices it just gives the standard message of "No nearby Bluetooth devices found" and stays on. But the minute you press scan at the bottom of the screen and it tries to find a nearby bluetooth device then it gives the error message "Unfortunately, Settings has stopped" and that's the end of story. I can't connect to anything. I called FreedomPop and they said their aware of the Bluetooth problem and said Samsung is working on it but they have no time frame when or if it will be fixed. So, can I possibly switch to a custom ROM from XDA that might fix this error without losing the connectivity of FreedomPop network? I am on their free 200/500/500 monthly plan so it's a great deal cause I don't use my phone much for calling or texting anyone and those numbers work fine for me. Any help would be appreciated. I already checked and the phone appears rooted and I can boot into the TeamWin Recovery Project V2.8.6.0 screen using the up-volume button and the Odin custom rom screen using the dn-volume button. I have also loaded Supersu from the playstore through Teamwin and it says I'm enabled. Thanks guys!