the auto slide of the carousel module is random

-- HikaShop version -- : HikaShop Business: 4.2.3
-- Joomla version -- : Joomla! 3.9.18
-- PHP version -- : 7.3.17
-- Error-message(debug-mod must be tuned on) -- : none

Hello,
I think I have correctly defined the parameters of the slide in the module ( prntscr.com/sda5xr and prntscr.com/sda64y ), but the automatic scrolling is not done. When the page starts, it seems to start scrolling, but stops after the second one item. By forcing scrolling with the mouse, 2 or 3 items scroll and stops ... generally, the scrolling is only done when the mouse is moved. At least its very random !
Any reason of this problem ?

question 2 :
Where is php and CSS files where i can hide/delete the word "unity" and reduce the size of the name of the product ( prntscr.com/sdb2wc )

Thank you,
Alain

Hello,
This is what has changed :
- at the opening of the page : slide to item 2 only
- possibility to change only by clicking and dragging the mouse on the image
Among all the options tried: by displaying more than 1 item out of 10, the autoplay works (but with image bands in the window)

Alain