Agreed, the accountants were involved with the company through the end of 2019, so if something shady was going on, you'd think they'd step up and say something. Can you imagine something shady is going on, not only does that bring down everyone on the management team at SOLI, but also the reputation of the accountants will be affected. Would they be willing to risk that?
I think it's safe to say there is no scam here or house of cards, but probably a bit of incompetence, lack of urgency due to the SEC deadline forgiveness, and possibly some differences in the way this new firm prepares for the last accountants.