I was searching for a while and not found nothing...
I have an app published in iTunesConnect, but instead of the app description (previously setted in AppstoreConnect), like in the image below:
... The owner account name (individual account developer name) is being presented. Like this:
How i can change this to the appstoreconnect description text?
You are mixing things up. By default the App Store displays two values:
a) App title/name at the top
b) App subtitle at the bottom
If there is no active app subtitle, the App Store falls back to the developer name. (Sometimes if the App Store is "slow", you will see the developer name for a couple of seconds, before it is replaced by the subtitle)
You can check the behaviour in this short video/gif I just made: https://i.sstatic.net/EYtES.jpg
The developer name is something you cannot change yourself in App Store Connect. It is the initial name you signed up with over at https://developer.apple.com/enroll
If you signed up as an individual developer, it will show your personal name.
If you signed up as a company, it will show the full company name.
You can change this, but need to contact Apple Developer Support for that: https://developer.apple.com/support/app-store-connect/ They can also help you with upgrading your account from personal to company.
