For some reason, I can't add the app to the appstore connect. Can't understand what happened, what the license this popup talking about.
Can't add new application in Dev account
Kindly ensure that the admin of the developer account adheres to the instructions provided.
The Apple Developer Program license agreement has been updated and needs to be read. To update existing applications and send new ones to the account owner, you need to read the updated agreement
and accept it by logging into your account on the Apple Developer website.
When the admin accepts the agreement you’ll be able to do your talks.
Post like that should be go to the community forums as they cover those issues: https://discussions.apple.com/thread/255021447?sortBy=rank
or talk to the developer support team. These forums are for questions about developing software and accessories for Apple platforms. Your question seems related to Developer Account I would recommend you to contact the developer account support at https://developer.apple.com/contact to make sure they are aware of the issue.
Albert Pascual Worldwide Developer Relations.