When you try to sign-in to a Creative Cloud app, you receive a message stating that your application is not licensed to run in its installed language.

Some subscriptions have specific language restrictions associated with them. This error is displayed if the application is currently set to launch in a language that is not supported by your subscription.

Solutions

Try the following solutions

Sign in with a different Adobe ID

You have signed in with an Adobe ID where your subscription to Creative Cloud is limited to working in a specific language. If you have another Adobe ID that has an unrestricted Creative Cloud subscription associated with it, sign in with that Adobe ID and relaunch the application.

Reinstall the app with the correct language setting

It is also possible that the app may have been installed in a locale or language that is different from the one associated with your subscription. 

Ensure that you have installed your Adobe apps in the language supported by your subscription. This language is also mentioned in the error message. To install an Adobe application in a specific language, see Change the language setting of your Creative Cloud apps.