My guess is that they're aware of it, and working on it. There's another thread in here with discussion of how to integrate COTM and GOTM results in the Global Player Ranking. There might be a technical bug that needs to be dealt with. I know AlanH has done some awfully good work with the auto-scoring upload programs that are used in G/C/SG OTM... It wouldn't surprise me one bit if he's debugging and tweaking the thing that updates that GPR. I bet when he's got it ironed out, future updates will be even faster.
I wouldn't sweat this. The GOTM staff is really on top of things... I don't expect this problem to linger.