Sometimes GMs download the file and are missing in-game messages. It might look something like this:
The commissioner needs to change the "League File Settings". Go to the Commissioner's Office, then on the right side click "League File Settings", and set "Messages from past X days (0=All)" to 0, as shown in the following screenshot. There is really no good reason in an online league to set this to anything other than 0, as the messages don't take up much space.
After changing this, the next league file upload will include all the missing messages.