Displaying wrong league rank

Hey Blizzard,
I have a pretty annoying thing:
While I browse my SC2 account via Chrome, my highest career finish is Diamond (which is true).
During playing the game, my profile shows me just Gold league.

I’ve already tried to relogin, it didn’t help.
OS: MacOS Mojave 10.14.5
Browser: Chrome, always last version.

Could you please help me to fix it?

Profile link: Profile Summary - nAz - StarCraft II Official Game Site