Elementor Menu Issue

Hi,
I want to remove the square block +/- in the dropdown menu but can’t find out how?
Here is how it looks:
https://drive.google.com/file/d/1pUxBVxNhXb1ssasOJbLAGpDYOxOvGJry/view?usp=sharing
When I choose the header template, this box doesn’t show up but then it appears in the editor and preview.
Does anyone know how to fix it?
Thanks in advance.