dont worry too much and always keep in mind wirecard, enron etc etc etc have all been properly audited.What about the details of invoices, do they usually check proof of work? I'm asking because crypto is quite a grey area, and it can be problematic even if someone is doing a legitimate business.
The Financial Statement may not be a problem, but I'm afraid things can scale, from an audit to scrutiny, require a license, hella compliance e.g. not just KYC but also the source of funds of your clients (very invasive to be done), etc