Yes, we have also found this issue. You have to set the background image again and click on save.
In this case i recommend you to use the Codeless Builder to add the background image.
The new update that we will launch this week with a new improved WpBakery Visual Composer and with all element in Content Blocks. So you can create and add any block or sections that you see on any demo with a click.
The issue is caused by a default Visual Composer element that have problems with styling during the latest update of the plugin. So i recommend you to use our element like the recent news to not have problem with responsive.
Yes maybe there is a bug there. We will take a look to fix it in the next update.
You can change the title of the toggles by accessing the Text editor in the back-end and replace the title with yours. You can to change only the words no the shortcodes.
Please can you check it now. I have added a new bigger image, the problem is that in the customizer there is no resizing done. In the published version there some image size of WooCommerce settings that resize the image to look better this is why you saw it smaller.
