Cash flow a real worry, less then 4 quarters left at this cash...

Cash flow a real worry, less then 4 quarters left at this cash burn rate. How has it increased so much. I only hope it is because they are massively ramping up productions to be sold into the next quarter.

Does any one know how this works?
9 Million in revenue
but only $8million in cash receipts. We are a million short. Is that because of credit terms. So the $1.4 million cash burn take away teh million we are owed is only a $400k cash burn. Am I thinking about this in a correct way