IS THERE ANYONE WHO MAKE A XOSP ROM FOR SAMSUNG SM-G530BT? XOSP ROM FOR SA-G530H IS WORK ON SM-G530BT BUT SOME FUNCTION NOT WORK LIKE (WHATSAPP CALLING, IMO CALLING , VIBER, AND ANY OTHER SOCIAL NETWORK CALLING FEATURES AND SCREEN ROTATION .
If it's crashing find out why. Did it work before. If so did you make any changes to your system that might cause it to crash? Has it been reported before? If not how do you expect it to be fixed. The devs would need information and logs.
There is an app called Andy Log that has a nice little feature called Last Crash. Run an app. When it crashes/FCs open Andy Log and tap on Last Crash at the upper right of app. It will pop up a window with info related to that crash. You can scroll through and maybe notice something in there that caused it. Otherwise select all the text, copy it into an editor and save it. Maybe zip it up, post a link to it so your device maintainer can have a look. Assuming any work is still being done for Marshmallow.