Stuck at 392

Dear all,

I've done all the standard orders currently available, all the aid requests. I'm currently stuck at 392 standard orders and I can't unlock the last 8 one. Looking at the different places, it seems like several standard orders should be available at F8 and other places.

I'm 5 stars everywhere but at Mr Impossible (4 stars and a half).

How can I proceed ?

Many thanks !