We are using “tidio” for our chatsystem. But it overlaps the add to cart sidebar widget.
Is it possible to set Tidio under the sidebar widget? Also for mobile?
Sorry but it is not possible to modify the z-index value of the chat module you added with Custom CSS because the z-index value is embedded within the iframe.
You can try adding the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS to change the z-index value of the sidebar. And see if this works for you.