Hi everyone, Good news, I found a way to solve that issue. Regarding to my research, many developers have also that issue. Hopefully, that will help you. So here is how I solved it: I followed these 3 steps: Creating A Provisioning Profile that comes with the extension .mobileprovision. Creating A Certificate file (with a password) that comes with the extension .p12. Creating An App ID to represent my app on the App Store. I have uploaded my app with Transporter, but received that message:  "Could not create a temporary .itmsp package for the app “appname.ipa” " I have opened Terminal, and typed in xcode-select --install .  I have emptied the cache of my computer (from there, it started to work well...) I have downloaded Xcode app (you will need it for verification from Apple) I shot down my computer And I have tried Transporter again :-). Steeve

Hi Lecricreator, Did you find a way to solve your issue? Same problem on my side :-(

Same issue here :-) I'm desperate too.

I changed the name of my app for Mathventure. Same result :-(

My IPA name is IOS_app_Suites_et_regularites.ipa . Do you think that makes a difference?

So I tried what you have suggested and here is the message error: If you have any other suggestion, please let me know. Thanks, Steeve

I received a email from Apple Support telling me there is no issue with my Bundel ID.

Ok, thanks. That makes sense. I started over with a new one. Problem solved. :-)