Fear, Uncertainty and Doubt

Hi guys, I'm a new (and inexperienced) investor in ANO from France , and I love the investing thesis, the management and the business.
Lately, a small voice as entered my mind and keeps naging me about something silly : What if all this was an acounting Fraud, Wirecard Style ?
In most frauds you have disconnets between the income statement and the cash flow statement. With ANO those can be explained by the inventory build up and growing accounts receivables in a context of rapid sales growth. Last year if I understand correctly the auditors where not able to locate all the inventory.
Do you have any material facts that can put me at ease concerning the reality of the inventory and accounts receivables and , more broadly, that the rapid expension in sales to final customers(not distributors) is real ?
Again, this might sound a bit silly, so sorry about that and thank you for your answers...