I have a problem with C# Courses, When i try to enter my trophy link in link box it says: the link is not right
Welcome to the community!
Have you taken the link from your transcript?
I had to create a new link there and enter it. That worked.
The trophy links do not include the transcript id, I noticed when I compared it with what is expected to show in freeCodeCamp.
If you have shared the current link with anybody, yet, it will no longer work when you create a new one. But, you can share the new link with them.
I hope this helps you!
Happy coding! 
Thanks Terryncaleval for your help. I already did what you just told me and it worked .