I don't own Edeas, but generally speaking, a crease can only form quickly in shoes or boots if there is excess room inside at that spot for the material to collapse into - in other words, a bad fit. You may be able to stop it by adding tape or foam (e.g., adhesive molefoam) inside the boot at that point.
However, they can also form if you use boots that aren't up to your level or weight - e.g., if you are too strong for lower end boots. Edea says
Chorus boots are "looking to include double jumps in their routines". If you are above that level, or if you are a great deal heavier than typical (young) figure skaters at that level, that could do it too. I'm not a great skater, but I wore out a pair of low level boots that fit quite well in a few weeks simply because I was taught to do ice dance with deeply bent ankles.