I'm trying to make a .ipa in Xcode from the build of my project file exported in unity3d. There was two errors in Xcode which are 1."Signing for "Unity-iPhone" requires a development team. Select a development team in the project editor. 2. Code signing is required for product type 'Application' in SDK 'ios 10.1' that I'm resolving so I tried to search in google on how to resolved it. We have already an apple developers account so I set it as the "development team" (step from the tutorial I saw) then when I'm trying to test the solution I did from Product->Archive in Xcode, I received the email and I think it prevent me from making a .ipa file.
I'm not still sure why I received that email. Based from my research, some say that it means I can not longer able to submit updates to the App Store for my application. Can somebody please help me on the reasons why.
Thanks in advance!