Over the years I've tried both the google plugin, and now the BSP one.
Mixed results. Almost always works on Linux/OSX, but my dominant platform is Windows.
Yesterday tried it again (BSP one) with IDEA 21.5 EAP with nightly on the plugins, and things got synced, but was not able to find any targets (they are C++ targets), funny it found and listed a "filegroup"
But I have my hopes up, the BSP looks like it's doing the right thing discovering much faster the targets, and probably needs more work just to finish all edge cases (like mine - Windows).