Cool, thanks. I accepted your answer and will close the feedback ticket. Thank you!

Oh no, thank you for the support! :)

To use this approach with Fastlane, it would be necessary to set some environment variables, as --password is not accepted as a parameter. Thanks again for the reply, it is great to know that there is an option while we don't figure out the API Key issue.

Hello! Thanks for the response :). It did work with the app-specific password and notarytool. I will try with Fastlane as well, I don't remember if they are 'forcing' the API key approach.

Hello! Is any update needed from my side? Thanks!

Hi again! I believe this is the bug number: FB15939005. One thing I forgot to add in the post but I added to the bug is, the Enterprise Key is much smaller than the Developer key, something like half the characters between ---begin key--- and ---end key---. Please let me know if I can be of more support or if I missed something. Thanks again for the help.

Hello and thank you for the answer. Sure, I will follow the steps and will update here as soon as I have a bug report number.