cf. Why the context is invisible in sample code (Runesas Rulz)
If the project refers to source files or header files out of the project folder (for example, files in the “bleip” and “rBLE” folders, and sub folders of “renesas”, as shown below), you need to import those files, too.
In such cases, you should once extract and then import the project, not as “archive”.
This project refers to files in above folders.
Note that, before pressing the [Finish] button, you also need to uncheck the “Copy projects into workspace” option.