I have faced the same problem twice with fresh installation of bbb 2.5.2.
First time was solved with re-running the installation script.
Now I face it again. yesterday and today's lessons did not appear. There wasn't even the files in /var/bigbluebutton/recording/raw/
After a few restarts some of the recordings appeared, but I have 2 recordings that I cannot make them appear.
Τhe folders
/var/freeswitch/meetings
/var/kurento/recordings
contain the folders of the meetings but the process is not progressing
What can I do? How can I force them to publish?