Yesterday afternoon I solved it by adding a word to the name of my app, so it worked and I could add more languages.

Here's the problem, my app name can't be used in other countries, here's the alert I got now: English - The name you entered is already in use for another app. If you own the trademark rights to this name and would like to have it unlocked for use, please submit a request. So it seems that the name I gave to my app I can only use in Italy, why in other countries they have the ownership of this name :-( But then do I have to change the name of my app?

Yes I have the .lproj folders in the project, as you can see in the image below, but how do I know if xcode included it in the review submission? Is there an option I need to set?

Has any of you given this problem? I've been trying to sign up for 6 months but Apple is blocking me. This is the message that appears before payment: Apple Developer Program Your enrollment could not be completed