If the importing of the component is successful you should be able to find the component in the Component Catalog. Can you try providing the lib file as a dependency to the project and check if you are able to find the component in the Component Catalog?
To add a dependency to your project, right-click on the project name in Workspace Explorer and then select Dependencies.
Can you please let us know the steps you followed to import the component? Also, can you please attach the component files and the project so that we can try to import the component and share it with you?
Thanks and Regards,
Rakshith M B