Return to Zhu's Hope - Door won't open
15 hours into the game and I just finished talking to Lizbeth's mom and wiping the floor with Jeong. I give that guy his USB for the side quest. I exit the refuge to get back in the Mako and try to return to Zhu's Hope, but the first door in the corridor won't open automatically like the rest do. In fact the little keypad next to the door isn't lit up at all. The other ones are usually green. I've shot it and it turns green, but the door still stays closed. I go back to the refuge and talk to everyone again, but they don't have much to say. I'm pretty much stuck here and I don't have another save file. It auto saved right after my decision with Jeong and I manually saved right before I got into the Mako to go back to Zhu's Hope. Any suggestions?