My developer account is new account, I am uploading first app, but I am not getting + sign button beside build option in iTunes connect. like this image...
In my iTunes page ...I am getting like this....
Image from Activity.
My developer account is new account, I am uploading first app, but I am not getting + sign button beside build option in iTunes connect. like this image...
In my iTunes page ...I am getting like this....
Image from Activity.
If you are uploading App, then in Activity Section it displays, and its status is processed whenever the status is active then display + (Plus) button. You can add the build.
I am assuming your app build is listed on iOS Builds screen with (Processing) status?
If not, then it will mean it did not deploy correctly from Xcode.
Note: you have to wait until Processing is finished before submitting your App to TestFlight.
Updated: In my case. Apple sent an e-mail when they completed the automatic test stage. It may take time.