Slideshow CK not responsive on iPhone

The slideshow works fine on Samsung phones. However, on iPhone 6, it sort of crops.
Website is tyreworld.co.nz/ and is made on Joomla 3.9.4
CK Slideshow version is 1.4.61

Hi
just tested on my iPad, it works great (same as on computer)
Please clear your browser cache on the iphone and tell me
CEd

It works fine on my ipad too. However it crops out on iphones. I have tested on two different iphone 6's and the slider image cuts out. Please test on iphone 6.

I have no iphone 6 here.
Please test with the template Protostar to see if the problem is really related to the module or if it is something from the template
let me know