Hello Lucas,

Our support does not fully provide customization solutions, but we can try to provide some basic CSS in situations like this. This will hide the scroll button 

Here is the CSS code

.amelia-v2-booking #amelia-container .am-cat__content {
    --am-h-cat-content: auto !important;
}

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.

Please, let me know if you have any other questions.