Hi,
My slider worked perfectly but today I’ve looked at my website and pictures became smaller with white background on both sides (I’m always careful to make exactly matching feature images).
Please tell me how to fix this. I haven’t changed nothing in settings it’s just happened.
My website: www.biggerthanlimits.com
I’ve got the same issue, can someone help us please ?
UPDATE: The issue comes from the Jetpack plugin, deactivate it and it will work again.
Try deactivating the Photon section in Jetpack.
Works now!
Thank you so much 
Thanks! solved!
This Jetpack Photon module issue is also already discussed in the following topics.
https://colorlibsupport.com/t/inconsistent-slider-formatting-on-desktop/
https://colorlibsupport.com/t/slider-problem-on-mobile-devices/
https://colorlibsupport.com/t/slider-images-size-suddenly-changes/