Default [Q] Issue with Vonage extension app on all non-stock Cloudy roms

I have been using cloudy stock on my g2 quite a long time and everything with this app was working fine..Recently cloudy flex rom. After this both Vonage mobile and extensions wont work with either Wifi/3G/4G. Yes none of them work. When I make a call, it goes upto "ringing" and immediately the call gets dropped no matter which number I call. Only vonage to vonage mobile calls go through. Any call to non vonage land or cell phone gets dropped right away. Ran through each and every possible troubleshooting step with tech support on the phone without any luck....anyone out there to help with similar issues or tell me if it is compatibility issue with phone being rooted/custom ROM?..this is driving me nuts searching google and trying to figure out what is the issue...please help anyone who know.
this is with. all cloudys non-stock rom i.e. flex, optimus, g3 rom for G2
please advise i had to go back to stock due to this