Unity v4 plugin officially supports LevelPlay
Two small tweaks to support LevelPlay
unityads.init( adListener, { gameId="APP_KEY_FROM_LEVELPLAY" } ) -- replace gameId with LevelPlay App key
--and
unityads.load("qwouvdrkuwivay5q", "rewarded") -- replace placement with Level Play ad unit ID + type
unityads.load("wmgt0712uuux8ju4") -- interstitial (default)
Note: you need be building with 2025.3724+ to get new LevelPlay framework, older versions will use legacy Unity ad framework