There's the problem.

Dutch Passion is one of the worst breeders, and dude, it's not you, its their genetics, they resist nutes and you're going to be unhappy with them.

I just got done with their orange bud and the yield was shit...same problems as you, grew fairly well during veg, mg problem, then once they got flowering they started losing fan leaves like no tomorrow.

My advice would be to chop them down and start over with something else...I still have a bunch of their beans, you can have 'em.

Oh ya, one of them hermed on me too.