I answered this is the same post you made last week. YOu MUST report this to the theme/plugin author. Redux is an options framework. That means when it’s disabled, no options are set. Enable Redux, and the options are set again. Based on having answered this kind of question many times in the past, the cart button issue is some option in the theme not set, which is why you must contact the theme/plugin author for support. We do not support individual themes/plugins, and premium theme/plugin support is not permitted in these forums.