The plugin PvPLevels is outdated, 'cause this he doesn't working with PlaceholderAPIhttps://www.spigotmc.org/resources/pvplevels.20807/
How to install the PvPLevels expansion:
As this isn't a verified expansion you can only install this expansion manually.
Manual: Simply click the green download button to download the expansion, then copy the expansion to the
Then run the
/papi reload command.