My server does not keep my inventory

I have a survival with plugins and with my friends, the problem is that when I have something in my inventory I leave and return I have nothing, in other words it disappears and I would like to fix my problem since it is too annoying because we cannot leave without saving the objects

Quote from Roman

Do you have plugins installed?

Yes, I have some plugins

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Which plugins?

Your issue is probably related to them

Luckperms, ItemEditor, SkinRestorer, ClearLag, MOTD, HolographicDisplays, Vault, MultiverseCore, CratesPlus, WorldEdit, AuctionHouse,PlayerKits,CubCustomDrops, EssentialsX,AuthMe,EconomyShopGUI, ChatEx, WorldGuard, Shopkeepers

Quote from Roman

Try removing plugin by plugin

The problem fix but if it continue i will try it, thanks