available on mobile view only

I have made another slider (the gold one at the top) https://www.headsandtailsjewellery.co.uk/slide/

Slider is set to full width- https://prnt.sc/127zjiy
individual slides x3 all set to default- https://prnt.sc/127zln9
slider placed in a page is set to default- https://prnt.sc/127zw0m

but still get the slider only partially filling the width.
if I set the individual slides to ‘stretch row and content (no padding?) then the first slide goes full width but the 2nd and 3rd slide are blank…

please advise the solution because this is far to complicated not to be a bug?

best wishes