Ain't no lawyer--and don't like crowds much (unless they are cheerin' for you :-))--that said, shares can be sold by the company via registered offerings and unregistered offerings via an exemption to registration (506)--don't see how a gofundme fits anywhere other than a bunch of peeps raising dough...
once the dough is raised, I imagine an entity representing the crowd (an individual or corp?) could enter into a debt or equity agreement with the company--how they worked out their individual situations would have nothing to do with the co. IMO...
if even possible, I see a whole bunch of trust involved and potential legal cluster^%$#s
that's my .26 cents...
I've heard there are financial wizards here who do international deals daily---perhaps they know :-)