I've found the solutions !
So :
1/ About the problem of compartments that are impossible to access to repair them :
It comes from this mod :
NYGM (1) Tonnage War V2.5 – Stand Alone Version
Folder : data\Menu\cfg\game
Files : damage_1 to 3.cfg ---> delete them. (I don't know what is wrong with them)
2/ About the red mark always displayed :
It comes from this mod :
NYGM (9) Stiebler4C_Addon_for_V16B1
Folder : data\Menu
File : en_menu.txt : there is a blank space after
589= ---> write
589=HULL INTEGRITY %s %
---
Edit : in order to have a green mark instead of gray, go in mod
NYGM (2) NYGM3_New
Folder : data\Menu\Fonts : change name of HullInteg1.tga, and rename
HullInteg1_opt.tga to
HullInteg1.tga