Hi @Ufuoma_Ogaga, thanks for getting back to me! Unfortunately I was unable to reproduce this on my end so in this case, I recommend you to contact our support team as they have the tools to have a closer look at your account setup.
When you contact them, please share the URL of this thread, a project and the name of a custom field added to the project that is added to your library but doesn’t appear in Reporting. This will help speed up the process and solve this issue asap