I think I interacted only with your medic Matz directly and I can't remember anything you did that was immersion-breaking or the like. You also took time and actually read about the lore, trying to show it, too. Your character's story is not the deepest, but that's not required. It has some really cool beats to it, like how Aleksey's parents "lost" their business.
At first I wanted to ask if you can't elaborate more on the father's death or why he needed money from the priest if the loss of the business and the following financial problems happened after the death of his father, but I wouldn't want my story set entirely in stone, too, so I'd rather not ask these questions. Almost all other questions I wanted to ask were still, even if short, answered by your app. I still have some questions, though:
1. Where will he live in Tau Ceti? Cargo Technicians don't make heaps of money and he wants to send much of it back home. Where and how would he live?
2. How has his view on the Republic changed, after their business was taken away from them? What does he think of Malik Hadii?
3. If you want and/or can, I'd like to hear a bit about their personality. They have gone through a lot, how do they treat and talk to others? Other Tajara, humans, etc.
I'm sure you'll have no problem with these questions thus, I support this application.