New to GBs... If nothing hits MOQ, no production happens?
Typically on (Mass)Drop, any kit that reaches its MOQ will be made for sure. If a kit doesn't reach its MOQ, Drop might decide not to make it. It's also possible they will decide to make it anyway. Drop will never charge you for a kit that isn't made.
If there is a kit in your order that isn't made, they will give you the option to a) keep the rest of your order, or b) cancel your entire order. Unfortunately they don't offer the option to revise your order.
Drop has always made cancel/keep decisions AFTER the group buy ends, so don't give up hope and cancel your order at the last minute. Even worse, not ordering at all makes that kit's chances look even worse, discouraging more from not ordering and snowballing to failure.