GRBG has always been a dilution trap and looks like it will remain so.
I also beliieve it has compliance problems with securities rules, particularly in issuing unregistered stock as free trading. IMO, this is a stock that could suddenly be strapped with a regulatory or other action such as by the DTCC.
IMO it's too risky to trade and certainly not good as a hold. If you play it, use only funds you're prepared to lose.