Hello Tuan,
If you'd like to switch from Swift UI to Enterprise UI you will need a min firmware version of 5.8.3.
Here's an article on same: https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-change-SwiftUI-to-Enterprise
I would recommend you upgrade to 5.9.3.2 at this point if possible.
I hope this helps,
Chris
Christoph S.