Authorization on Stepik is failed

[Lishkon]

Guys, I have just installed the Hyperskill plugin into Intellij IDEA, and can't actually sign in to my Hyperskill account through it to start using it.
Here's what I am getting - http://take.ms/BFc5rj
It's kinda weird that it looks to localhost, isn't it?

Steps:

1. Installed the plugin - http://take.ms/hO2t4
2. Restarted IntelliJ
3. Opened 'Hyperskill' -> 'Start Hyperskill'
4. Clicked on 'Login' button - http://take.ms/hpYES
5. A page opened:
   https://hyperskill.org/oauth2/authorize/?client_id=<client id>&redirect_uri=**http://localhost:63342**/api/stepik/oauth&response_type=code
6. Clicked 'Authorize' button

Actual result: http://take.ms/2bWRy