The m3u files were empty because a new issue arose while we are making changes to the system which we fixed now.
Sorry for the inconvenience.
If something like happens in the future and clicking the SAVE button doesn't help, then DO NOT CHANGE ANYTHING, just wait.
Sorry for the inconvenience.
If something like happens in the future and clicking the SAVE button doesn't help, then DO NOT CHANGE ANYTHING, just wait.