Is this for the Gospel LIbrary app? Is your MacBook Pro an intel based or an Apple Silicon based (M1 or M2 ) processor? On the Macbook Pro, Do you log on ito the church web site to try to view the marking or use the gospel Library app on it? Also, which marking are you refering to? Bookmarks, Notes or Highlights? Knowing a bit more detail about the current setup on both ends, help in troubleshooting this issue you are reporting. Thank you.