Sliding takes several attempts to work on mobile , zoom function missing

Hey,
as seen in the Titel I have some issues with the WooCommerce Variation Gallery (Pro Version).
First of all it takes 3-5 attempts to slide between the variations pics on smart phones until the next picture gets shown. Why is that?
Second of all, I miss the zoom function. I already made sure the zoom function is turned on in the settings. What can I do to enable it?
Thank you for your answer.
Best regards.

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