Grommsh

help please

Hey there, I have completed White March Pt. II and most of Act III, still not able to trigger Zahua quest. Each rest, game restart, zone travel seems to trigger his quest. I have exhausted all possible dialogue many times over yet I keep getting option 6. You said you swore to... I keep exhausting this yet to no prevail am I able to start this quest. It is nearing upon the last thing i need to do before i can complete the game and this is irking me. How can I force start this quest? I am fine with using a console command or whatever i must just so I can complete his story, though if this would affect the endgame results that are transferred to Deadfire I probably would like another way to start it.