Was going to use Xamarin forms to produce iOS and Android apps

However drag and drop in Xamarin forms just showed a red circle with a slash through it. Is this a paid feature that is required
to use which means upgrading from Visual Studio 2017 Community. I tried everything including
removing anti-virus and reinstalling. Was a major headache after getting everything setup. So is this
a paid feature if so I have already invested time on other platforms but would still like to know.