If you have little to no cash, you've been robbed, and you've not been paid for a year, you have to start thinking about self preservation. If you've lost your work too this project is going to be inevitably and dramatically delayed -- any payday from this start-up is far out into the future now. You don't need me to tell you you're on the verge of a bad situation. (How are you paying rent if you have no money, btw?)
I have no idea how donation-based classes will work out, but you should act pragmatically and cut back your time spent with this start-up so you have time to focus on other things, lest you starve. This is the reasonable course you should take right now.
(On a side note: it bothers me that you've been working unpaid for a year for someone else's literally bankrupt business.)
Freelance, get a McJob, claim some sort of welfare if you're eligible -- do whatever you have to do to keep yourself afloat. Businesses, especially start-ups are risky things, and while this may work out fantastically in the long term there will be no long term if you don't take care of the short term.
Take care of the other issues, like getting a police report now. You'll probably need that to report your passport stolen, so really, do this immediately! I'm going to guess you don't have contents insurance, but if you do, claim also.
Edit: if you're living off savings as you've mentioned elsewhere, why was your money in cash rather than in a bank account?