VSDC edited video ended too fast on youtube?

i spent so long editing a video. Some of the edits didn't even make it onto youtube then it ends before the rest of the video can play? How do I fix this.

micksmixxx2021-03-15T11:39:31Z

YOU could try using a modicum of intelligence and tell us what YOU are waffling on about. i.e. How long is the video?  What type of account do you have on YouTube?