Hi Milan,
Did you notice the error of the flagged alert? Click on that flag or get the error screen shot which will help us to understand the issue.
I believe this is not a flagged alert on the AP.
About the License error, please contact our Welcome center with the Activation code and the Device Serial so that they can map the license resolve the issue.
Below is the support link to contact.
https://support.ruckuswireless.com/contact-us