felt_tips said
Keep this project and in five years time, when you are a professional motion graphics designer, take five minutes to look back at it. You’ll probably understand straightaway why it was rejected.
In the meantime, push the boat out, have some fun, make something crazy.
+1 + 1 + 1
I am a new author on VH ( a few months ) and already I’ve had a few files rejected. Most of the time, it’s because I didn’t take the time to think about how the file would be attractive for people to buy, and this is the first rule and first step for VH in my opinion. Unique is one thing, but marketable is something completely different! It can be difficult when you don’t see eye to eye with what the reviewer says, but hey, it’s really an opportunity to take a break from that project and look back on it later and improve it when you can collect your thoughts. Criticism is good my friend, just remember it’s not personal!
I really agree with felt_tips on this one… If you are still doing motion graphics for a living in 5 years time, you will look back in total understanding!
Do what you love, and don’t give up on your dreams.
“But you do have an advantage over an experienced designer here on Videohive… you have more to learn and making these projects (and getting them rejected) is helping that learning process.” (felt_tips)
There is a lot of wisdom in this statement and if you look at it in the right light it can be very inspirational. It’s like a mantra from an design ninja master. My understanding is that Videohive is a marketplace and a community that is focused on pushing the envelop. If you look at a file and think “does this push the envelop?” then you probably still need to improve your file 
One thing I’m not sure about, is wether you can message the reviewer to ask them a question about your file if you are not sure what they mean…