Inertia, or, mechanical trigger? Guess if it has an inertia trigger, I’d attempt to reset it by dry firing the gun and then bumping the stock to see if I could figure out if it was resetting.

You are pretty vague about what you have. If you can’t get it to reset, and, it is new, maybe don’t take it apart, lest you end up with the Florida/Georgia warranty-Both halves, are yours

Best,
Ted