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Hello, where can i find api key? I downloaded Polished theme, but if i want to update theme in wordpress, it needs api key.
You cannot update automatically because you do not have an API key. When you want to update you have to do this manually: 1. Download latest version from GPDL, 2. Delete old Theme, 3. Upload new Theme.
I wanted to know if my setting and other config will be lost if I deleted the theme and installed the updated one.
You should be using a child theme, but I would make a back up of your site just in case something goes wrong.