Sticky menu hidden by slider when scrolling down

This is very likely a Z-index issue. Unfortunately, I can’t diagnose it properly from a screenshot, so I won’t be able to tell you what you should do to fix it.

Try setting the Z-index value of the sticky element (in the plugin’s settings) higher to see if that will solve it. but keep it as low as possible at the same time (100? 500? 1000? 5000? 99999? etc.)