Try resetting the apn
Flashed 20th oct version, removed APN and added again, thanks. Volte is working fine now without any isuues. Just that volte doesn't show up in status bar.
You hate me or whatever, i lost complete trust in this project, started to feel its fake and might be all for donations, seriously its been 2months+ and all people are ready to offer the OP free lumia, still he doesnt want those, and he always get...