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1) Looks like you bumped the camera a few times. Try not to do that.
2) Your camera refocuses A LOT. Might not be much you can do about that but it's an issue.
3) You flipped the video or something - your iPad is upside down and reversed, which kinda defeats the purpose of showing it.
4) I watched about the first four minutes - too little discussion of the turning of the cube. No mention of the pieces being oddly sized either.
5) The video felt like you didn't have a plan. It seemed to jump around with a kind of undefined structure. Since you were talking about a product you're already using, and not doing an unboxing, you should aim for a more thorough plan.
6) I could see and hear you clearly. That's extremely important - well done.
Worth mentioning that the new Rubik's Connected (and slightly different app) were released in September. Everyone here knows that but the general public might not. You could do a video on it too.