I am working in Visual Studio 2019 on my Mac and allowed it to update Xamarin.Forms to 3.6.0.293080. I followed the directions at https://xamarinhelp.com/admob-xamarin-forms-display-google-ads-mobile-app/ and it worked beautifully with my Android version. Now I am trying to add them to iOS so that the lengthy distribution process can begin, but I get 66 errors of the type shown in the title.
If I transfer the project back to my Windows system with VS2019 will it compile for iOS? I have tried various adjustments such as changing Linker Behavior to Link All and putting "Quartz..." something in Additional mtouch arguments. Everything that I find on this is old and not truly helpful.