Honest opinion: I'm intrigued by the visuals and aesthetic, but if I downloaded this game as it stands now I'd uninstall it after about 30 seconds.
The platform disappearing is far too quick. Now, this can be addressed easily enough but you should understand why it's too quick.
I get that you want to challenge the player, but you need to give them some incentive to want to be challenged. At the moment the challenge simply outweighs the reward, so it becomes very frustrating very quickly. When creating tasks like this for the player to complete, you need to reward them heavily early on, and then make them beg for those rewards later.
Get them hooked first - give them a little more to go on with minimal challenge. When they conquer those challenges they'll feel good about themselves. Keep the challenge level the same and they get bored, so you need to gradually increase it as the game (and rewards) progress, with a couple of brief difficulty spikes thrown in that the player will feel extra good about overcoming.
Use the carrot and the stick. Too much of either becomes boring or irritating.