I've had the same problem for some time with mine, thankfully it's summer so the heat made the insert expand and lay relatively flat
My guess is that the glue that holds the little bolts to the hood insert fails over time and the insert "frees" itself from the bolt, apparently the prior owner had the problem as well and used a glob of urethane to "smush" the insert down onto the metal hood, I plan on trying to fix the problem over the summer but if that fails I went ahead and got a replacement insert as well just in case