1) Oh yes – now it’s gone. What did you do – in case I need to do it again?
2) Yes, I am planning to remove it too, but your answer helps to find out if there are some suitable filters that could be used on store page (I think limiting the already “only this shop” products cannot be further filtered, or can it? When I tried search in that box, it brought other things too so I don’t need it in case it is not targeted to only this vendor store. (or can it be configured?)
1) I made some fixed of the parent theme styles. These fixes will be included to the next theme update.
2) That option switch on/off sidebar for both shop page, categories page, vendor page because vendor page inherits the shop page layout. We don’t have option in our theme to disable it for the Dokan vendor page only. Ask the Dokan plugin author, maybe they have something in the plugin settings.