HOT Flash Menu - how to change Image on hovering over Menue

Hi, I recently bought this Module in order to implement it into my Joomla 4 project.
It's a pity that it is not responsive, but one function, shown in the Demo I could not manage to activate:
When you hover over the menu entries, the background picture should change accordingly.
Maybe this can be configured  on the "BASIC" Tab wich is unfortunately not accessible in Joomla 4. 
I suspect there is this "BASIC-Tab in the administration Interface since I saw a screenshot. 
Please help me to get the stuff working.

Hello,

The Basic tab contained only one field where you are selecting a Joomla menu. It's moved under the Module tab now, so you can select a Joomla menu there.

When everything is configured properly and when proper background images are uploaded, your menu should work like our demo: demo.hotjoomlatemplates.com/test/hot-flashes-menu

For more details read this: www.hotjoomlatemplates.com/joomla-extens...oomla-menu-slideshow

Make sure you entered the correct path of your background images under Flashes Menu Options > "Images folder url". Background images in this folder should be named as "bg1.jpg", "bg2.jpg", etc. (big background images) and "sub1.png", "sub2.png", etc. (submenu background images).

Regards,
Milos

The images are configured properly and the menue shows up as it should
... with one exception: the background image does NOT change when hovering over the menue... but this is crucial to me since this module has to replace an outdated module which works this way....
How can i apply this functionality?

developing site:
www.itsmiz.at/astrifa

Hello,

I don't see where the Hot Flashes Menu is published on your website. Please explain or provide a correct link.

Regards,
Milos