Most likely because it says you have to complete levels 1-5, you just skip straight to level 5, I don't think that would necessarily count as a completed level if you skip straight to the end, at least that's what I would think, even so, you should ask the mod themself why it's not valid

The Site

Run being rejected for following rules... WTH

enbee

Crash Bandicoot

Crash Bandicoot 2: Cortex Strikes Back

Crash Bandicoot 3: Warped

Spyro the Dragon

Spyro 2: Ripto's Rage!

Spyro: Year of the Dragon

The Legend of Zelda: A Link to the Past

Super Mario 64

Animal Crossing: New Leaf

Super Mario Galaxy

Super Mario Galaxy 2

Super Mario 3D World

Super Mario Sunshine

Donkey Kong 64

Banjo-Pilot

Banjo-Kazooie

Banjo-Tooie

Banjo-Kazooie: Grunty's Revenge

Banjo-Kazooie: Nuts & Bolts

Splatoon

Bloons Tower Defense 5

Undertale

Multiple Spyro and Crash Games

Multiple Rareware Games

Undertale Category Extensions

Super Mario 64 Category Extensions

The Legend of Zelda: Breath of the Wild

Mario Kart 8 Deluxe

Splatoon 2

JoJo's Bizarre Adventure: Eyes of Heaven

Super Mario Odyssey

Celeste

The 1545

Bloons Tower Defense 6

Deltarune

Kindergarten 2

Kindergarten 2 Category Extensions

Splatoon 2: Octo Expansion

The Henry Stickmin Collection

Henry Stickmin Category Extensions

Super Mario 3D All-Stars

Persona 4: Dancing All Night

Super Mario Galaxy 1 & 2 Randomizer

Pokémon Brilliant Diamond/Shining Pearl

Persona 3: Dancing in Moonlight

Splatoon 3

Persona 3 Reload

Metaphor: ReFantazio

FloweryFeathers