How can I remove the scrollbar in the lightbox window?

If you will remove the scrollbar to the left, you cannot submit the form because you cannot scroll down to see the submit button.

As for the scrollbar at the bottom, I don't see it here so I think that is all set now.

If you are still seeing that scrollbar, you can add the following custom CSS codes to your stylesheet:

.jt-content {

overflow-x: hidden !important;

}

Let us know if you need any further assistance.