I have linked my account and verified that I have the trophy, but I still get the error message “We were unable to verify your trophy from Microsoft’s learning platform.”
That appears to be the incorrect trophy for the Write Your First Code Using C# module. This is the trophy you should have ended up with:
I have completed that course but it didn’t give me a trophy so I keep clicking the related modules until that was the first trophy I got.
That course only applies to the first challenge: https://www.freecodecamp.org/learn/foundational-c-sharp-with-microsoft/write-your-first-code-using-c-sharp/write-your-first-c-sharp-code
When you move to the second challenge (https://www.freecodecamp.org/learn/foundational-c-sharp-with-microsoft/write-your-first-code-using-c-sharp/store-and-retrieve-data-using-literal-and-variable-values-in-c-sharp) you’ll see a new Microsoft course link: Store and retrieve data using literal and variable values in C# - Training | Microsoft Learn
Each of these challenges has its own Microsoft course link - you’ll need to complete all of the linked courses to earn the necessary trophy.
It turned out that even thought the system stated I had finished all 6 modules, going back through each module revealed an incomplete one.