LocketteX not working

Hi there, I'm new here and I would try to use LocketteX to lock my chests in game. I tried it in local and it worked, but when I tried do add it on Aternos server seems it's not working at all. I'm using 1.19.4 and I tried both spigot for 1.19.4 and paper for 1.19.4. I'm trying with LocketteX 1.7.9.