While Leo was resting, the entire Beast Sanctuary turned upside down due to the 210 beastlings that were searching for the required materials for the evolution.
Not only the beastlings but even their parents and family were also searching for those materials.
In short, more than 500 beasts were moving around in the Beast Sanctuary searching for the materials that Leo mentioned.
There were thousands of Beasts in the Beast Sanctuary; however, when more than 500 beasts were searching for different items, it turned the entire Beast Sanctuary upside down.
Due to that commotion, the new beast tamers that entered along with him were having a tough time forming contracts with their selected beasts because they were searching for the materials either for themselves or their children.
Whereas the other beasts were curious about what the beast and beastlings were searching for and asked for it.