Upgrading app for iOS 15

I am the developer of an Enterprise app for iPhone and iPad. After upgrading an iPhone to iOS 15 I get the message "The Developer of this app needs to update it to work with this version of iOS". I suspect the reason is that iOS 15 no longer supports 32-bit apps. Can someone please tell me what architectures I should enter in the "Valid Architectures" setting of the XCode Build Settings. I Used to have arm64 arm64e armv7 armv7e. Should I replace armv7 by armv8? What about the "Architectures" setting. Should I change that to $(ARCHS_STANDARD)? I have attached a screenshot of my build settings. I am using XCode 11.7 on a Mac with MacOS Catalina

Here is what I use, MacOS 11.6, Xcode 13, iOS 15 (simulator):

I did what you suggested, but when I try to run the app on the iOS 15 simulator I get the following message: "App's architectures (Arm64) include none that iPhone 11 can execute (Intel 64 bit)." Any ideas as to what I could do ?

Upgrading app for iOS 15
 
 
Q