Hello, I'm not responsible about the dev mode, but you can find many tutorial on the internet :-) This one for example :
ive try top see all video, do the same, but cannot solve this...ive seen many people had the same problem, so o thought there was answers about it
I don't have an answer on dev mode. Dev mode isn't on my side but on Meta side. I can't really help you except showing you some tutorial videos...
