To look up the names of offline bedrock players, we use an API. This API requires a token to work. You can claim a token like this:
Go to XAPI registration and fill in the form. The Free plan should work just fine, as we store player names in cache. Then check your email to verify your account.
Sign in to your account. Then login to your Xbox Live account on the Profile page. You can use the OAuth or fill in your account details manually.
Copy the API Token, go to your server files, and then to /plugins/ThemeParkRidecountAddon/config.yml, and paste it at XAPIToken.
Done! Restart your server, and now you should see the correct player names for Bedrock players.
Pay attention! Because of privacy reasons, if the player has disabled viewing their name for non-friends, you can only view their name if you are a friend of them.