Hello.
Unfortunately, this map is being rejected.
We do not have any maps from the game "only up", if this is what the theme is from; however, the way in which you have executed this theme is not original as we have many maps that have bioms, etc.
There is no main build/island to your map which means that all of your parkour is floating. This is not allowed Build a main island & build to path your parkour on. You will be able to add details and depth that this map is currently missing.
The parkour itself is not an insane difficulty and has no checkpoints. Your map will need to have checkpoints and be extremely buffed for an insane difficulty. Use more variation such as, ladders, glass panes, fences, doors, trapdoors, ice, piston heads, cocoa beans, soul sand, slime, heads, etc so that you can space out your variation and make the parkour more enjoyable.
We hope to see more maps from you in the future.
Have a good day/night
-Hayley