Okk after booting the rom select sim 2 for data and don't change the network settings let both the sim be set on 3g and check the calling on both the sims it should work
And it will work in all of my roms so u can try this in any of them
Follow the steps given above and if still doesn't work then clean flash again and then try these steps
i installed this rom yesterday successfully with the latest twrp recovery. i was very happy with the performance and battery life but i encountered two issues. the phone call outgoing call had not any outgoing sound and no other calling sounds were heard from earpiece or speaker as well. and i couldnt import contacts from my sim card which previously were there but not showing and i believe the saved numbers are still in the sim card as i have not tampered with them.