- Verify that you have the JetBrains Academy plugin installed and up to date.
- Log out from your Hyperskill account and log in back in Settings/Preferences > Tools > Education in IDE again.
If you use the Brave browser, disable Brave shields for https://hyperskill.org.
Also, we usually recommend Google Chrome or Mozilla Firefox, and we do not recommend using Safari. Safari is known for a strict policy on cross-origin requests and may cause issues with the browser-IDE integration.