I ran my first 1/2 marathon at WDW a few weeks ago, and was motivated to go for the coast-to-coast medal this year. I was pumped to do the DDD, but despite my best efforts to sign on at noon, there were issues with the site and I couldn't log on before it sold out

I wasn't sure how quickly the rest of it would fill-up, so I signed up just for the half, but wasn't sure if I could try my luck with everyone else in two weeks for the DDD. Does anyone know if it's possible to change the registration? These races are crazy to get into!