I have an old app that I just got a notice will be pulled form the App Store if I don't upgrade. I tried to open in Xcode but it says I need to use Xcode 10.1 to convert to Swift 4. Exact message - "Use Xcode 10.1 to migrate the code to Swift 4." I downloaded Xcode 10.1 , now the OS (Sequoia ) says can't do it, have to use the latest version of Xcode. Exact message - "The version of Xcode installed on this Mac is not compatible with macOS Sequoia. Download the latest version for free from the App Store." Any experience with this and suggestions would be greatly appreciated.

Hi, I did get the renew invoice in email but there was an additional charge the same day / time for $6.19 from Apple , seems like it is related but cannot find any invoice in email or anything other than a charge line on the credit card. Does anyone have any idea what this additional charge might be? Still waiting to hear back from Apple.