Hello, welcome to the community! And thanks for your feedback.
As per the FAQ post, could you please enable “Verbose output” in the “Log” tab of the SonarLint tool window, and try again? This could give us some insights about what is happening.
Do you have any proxy settings that curl would use but not IntelliJ? Which version of IntelliJ are you using, on which JRE (see in “Help” > “About”)?