I tried recently to go to Expert server, after i select Expert server, the Airport Page stuck on loading, i am Able to enter expert server (Although it took me 30 seconds to connect).
However, it immideatly shows airport status on TS1 and Casual.
Device and networking info:-
S7edge Exynos 8890 version, android 7.0, unrooted.
20 MB internet, strong signal.
- Load IF
- Choose “Expert server”