Hello, I've created a new user in my organization. I am not exactly sure which license it has. The user is able to create an app and share it with other people, but when i tried to share an app with him it is not working. I get the following error :

How to approach it, the user will be used only to create Power Apps / Power Auomate flows and i want the account to have minimal number of licenses assigned to it. I also want to change ownership of all existing flows/ apps to this user , what would be the best way to do it?