Can't select a build in app update!

Hi everyone,


I'm trying to send to review a new version of my App. I've created the new version information tab through iTunesConnect, as usual. This time i found an issue, i can't select a build to send to review. I compiled the IPA with the same version that i've typed in itunes connect.


Did anyone had the same issue? What can i do to solve this problem?


Best Regards,

Marcello