How to configure Separator / Delimiter lines

We purchased "Maximenu CK Pro"
I have a question regarding the styling of the submenus, specifically about the delimiter line between the submenu items.
How it could be removed?

Hi
this bottom line comes from the default theme/style
you can setup a bottom border to 0, it will remove it
CEd

Hi Ced, thanks for your reply.
Could you please indicate in what section should I navigate and set 0 for the border? I tried many of them - but that didn't help.
Is it in one of these?
Main Menu / Menu Bar
Main Menu / Menu Link
Sub menu / Sub menu
etc...

check in "Submenu", then in the left side "Menu link", this shall work

Ced, tried that, see screenshot. But it has no effect

ok, then do that :
in the module >> style >> theme >> select "blank"
then edit your style again, go in the Presets and load the "defaul" preset (this is the same look as the theme). Now you will be able to change all the values from the interface