Hello,
1) I’ve added WooCommerce product categories widget into shop sidebar and it’s working perfect. http://prntscr.com/72tqxd
2) Also single product page sidebar working fine. Please see screenshot: http://prntscr.com/72trhv
Please clear all cache and check this issue.
3) Please add this code in custom.css file
.sxy-zoom-container .sxy-zoom-bg{
width: auto;
height: auto;
}
Here is a video tutorial how to create custom.css: https://www.youtube.com/watch?v=Qok2zRedRMY&feature=youtu.be.
Regards,
Robert Hall.