If your server is on 1.19 you need to get the latest development build of ProtocolLib from their CI (direct link here).

Changes:

• Fixed some concurrency issues.
• Changed how the scoreboard is cleared to make sure the player doesn't get stuck with a old scoreboard when changing worlds/regions.
  
• Some internal changes and optimizations.

This update includes features requested by SimpleScore users, if you have anything you would like to see added feel free to reach out to me.