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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Are you sure you actually logged in, and entered your 2 factor authentication as once you do that you should see a list of devices. Also are you using the beta or the last release, if the last release I would switch to the beta. Then if you have problems post to the page here under issues https://github.com/homebridge-eufy-security/plugin/wiki for the plugin as they would know. Also reading through the issues tab you might find yours and a solution.