Lost the vertical scroll

Design help Layout & Design
1

Hey guys) Hello everyone. I created an adaptation, and at a certain breakpoint, I lost the vertical scroll from top to bottom on the website when i watch on it in browser. What could be the reason? It lost from 767px to 480px

https://preview.webflow.com/preview/training-8cb776?utm_medium=preview_link&utm_source=designer&utm_content=training-8cb776&preview=864d804b8c4d877e0e49420f3440e8ac&workflow=preview