Hi @Tobbe,
We're happy you like our tools.
Do you have the WordPress core files included in your project? or do you have just your plugin in there?
If your plugin is in the same folder as your WordPress, just create a PHP Project in the WordPress directory.
If your plugin is outside the WordPress directory, create project from your plugin, you can add an include path in the project settings:
I hope it helps.
Note, In case, you don't have a PHP project created and you only using "File / Open / Folder" feature, you need to open the root WordPress directory that already includes your plugin.
Please let me know how it works for you :)
