I was just informed that my application passed the Compatible App Check, but my calls are still failing with the "call limits exceeded" message. Why?
It takes a while for your upgraded call limits to take effect. If your application attempts calls before the new limits take effect you will see that error.
If your limits were upgraded for the Trading API calls, it will take about 15 minutes for your new call limits to be effective. If your limits were upgraded for the Finding or Shopping API then the new limits will take effect after midnight (Pacific Time) that day.