I have my Mailchimp API Key to add email collection from my Common Ninja Pop Up widget with discount code reveal. Where do I put the Key into Duda?
I'm not sure if this is a Duda question. It sounds like you need to configure your Common Ninja widget to connect to your Mailchimp email list. I know it's very easy to do this with Duda's native contact form but you likely need to reach out to Common Ninja for help with this. Or perhaps I do not understand what you are trying to accomplish.