After connecting an app the User Profile > Apps & Projects > Imported Projects page will only display projects you belong to - either via your personal account or an organization you are part of.
But what if you want to track an open source project that does not belong to you?
Nothing easier. Simply click on Add a project manually at the top of the screen:
Enter the handle of the open source project you want to add:
After a few seconds your new project will appear in the list of projects available to import.
As a last step, tick your newly added project and click Import.
Voila! You can now track all the open source projects you contribute to on Keypup.