From the VisualGDB side, there is no difference between these cases. If you can build the project via command line outside VisualGDB, you can import it into VisualGDB as shown in the tutorial. If you cannot build it outside VisualGDB either, simply importing it into VisualGDB will not automatically fix the build issues.
Please refer to the emails from our support on 2021-10-02 and 2021-10-03 for a detailed explanation on what to expect from VisualGDB. We handle support inquiries and forum inquiries exactly the same way, so the same rules apply in both cases.
Please also feel free to refer to our project importing documentation for a very detailed explanation. In short, if you would like the import to work 100% automatically, being able to build the project via command line is a requirement.