Hello,
The NuGet package must support MAUI (net6.0-ios or net7.0-ios) to use it. I checked this Xamarin.CardIO.iOS nugget package, it is not supported for .net-iOS. And I find its component at Github , it hasn't been updated for a long time. As stated in the Announcement, it is no longer supported by XamarinComponents.
If you still want to use this library, you could download the iOS SDK from their source repository: https://github.com/card-io/card.io-iOS-SDK, then try Binding Native Libraries for .NET MAUI. (This library hasn't been updated for a long time, it's not clear whether you can make the binding work)
Best Regards,
Best Regards, Wenyan Zhang
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