Hey Artigo,
I'm sorry to hear that your mod broke. I will do my best to answer your questions.
1) Go check the vanilla
brit_forward_hq_mp in
action_apply_ext the last
requirement_action.
2) Again here go check and compare your and vanilla ability, for example
major_artillery.
3) Here make sure the ability in vehicles ebps
ability_ext. If the ability is there go check the abilities requirements. If that doesn't help you could again try comparing your smoke ability with the vanilla ability
panzer_defensive_smoke.
I hope I answered all of your questions. I wish you luck in repairing your mod!
Regards,
RagnarTheGamer