Sounds like the dispensing mechanism may have shifted into an unusual position during shipping (or while packing?) since it was a brand new machine, and after working the mechanism manually it now functions.
I’ve had my F2 for nearly 2 years, about 2000 hours of printing, and haven’t had a problem with the resin dispenser (other than failures to dispense because the slot was not open, or because old resin had partially separated). So I wouldn’t think this will be a long term issue. I think I remember one other person on the forums having an issue that may have been a dispenser motor failure. But it seems pretty rare.
In any case, my F2 has been incredibly reliable and produced successful prints in the high 90s percent. Some may counsel you to return it out of frustration, but I can say that if it works for you it will produce amazing results.