The bottom line is that any company with a negative working capital needs to get some cash sooner than later. Be it from sales or some financing raise through debt or equity.
I can't see debt from a typical lender so maybe related parties, again. Equity? With related parties again since it has been awhile with external parties? Sales cycle too long and you are talking about gross margins being that "free cashflow". Biggest source known is the collection of the US $8 million accounts receivable. Massive, that it is really unbelievable that it remains uncollected for so long from a large venture. Expected in Q2, and needs to happen.
Ofherwise, all this talk about what may pan out in the future from trials with no determinate end in sight is hypothetical and impractical.
Really interesting to watch how this will unwind.