Could you, please, check if you have any errors in server error logs and provide them? Because we can’t find what causes issue with the portfolio projects and don’t see problem with theme code.
Also, we found some redirect when we want to go to project links https://gyazo.com/b50a3ea51449a6206d98c7d1ffa8f65d
Link is changed and we get 404 page because it’s incorrect.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.