Hello,

1. Sticky notification: the reason is the out-to-dated Woocommerce. Each time when Woocommerce releases an update there are HTML structure changes and we adapt our theme CSS for these changes. Each time Woocoommerce release an update the number of problems would grow. That is why it is very important to update Woocommerce and our theme.

2. and 3. Please deactivate all the plugins not related to the theme and provide FTP access. If you cannot deactivate the plugins, clone your site to a staging platform where we can test and detect the problem.

Best Regard