Hi AriesNinja,
I am sorry to tell you this map is being rejected. The theme is original I suppose, but it is very aesthetically similar to some maps that already exist on ManaCube. There isn't much of a build as it's a massive box with a very tiny tunnel on it. Using the whole plot as the build, it would exceed the width limit allowed for maps. The build is also fairly unattractive to look at on the exterior, and there aren't many interesting details within the tunnel that make the map unique from other maps that are similar aesthetically.
The parkour is not possible to do in the main parkour world because pistons do not function properly there. While the concept of timed piston parkour is cool, none of the jumps are varied because pistons only really work with slimes and normal blocks. There are also the matter of the unmarked barriers on the map. Please use signs or item frames to notate where barriers are placed, especially ones that are a part of the course. Players are unable to see barriers (not even outlines) in the main parkour world. I also think the map is too easy for the medium difficulty. Aside from the timed aspects all the parkour is normal blocks, and the lack of variation makes the map pretty easy.
Thank you for submitting this map! If you have any questions, feel free to message me here on the forums, in-game, or on Discord.