Oculus platform tool upload application always stuck at "pushing to CDN"

As titled, I was trying to upload a new build of our existed game to Oculus App lab using unreal’s Ouclus platform tool under Oculus VRPlugIn, I’ve done once before but this time when I upload, the progress always stuck at “pushing to CDN” and never ends. Does anyone have the same problem or perhaps some hints to figure out what’s wrong?