I think the situation is not so wrong as you decribe it.
You took 7k loss on margin trading, but you paid back all investors which are borrow you for that. So I think I can say that this loss hit your personal funds most. Also you said that you have funds for new a car, but lost this funds.
Recently you reopen this Paxful-trading thing, get PayPal closed, but this is not loss in current time, or very tiny -- it just hits your future profits.
So i think you should have enough money to pay all investors back their money. Also based on Google docs spreadsheet, it is only couple of thousands -- you can earn that in real life job by 3-6 months.
But, first, you need to be transparent .. we can definitelly work this out.