[Bug]: Custom armor Attributes not working

[Sesantanove]

Confirmations

• [X] I am using the latest plugin version with the required dependencies.
• [X] There isn't any open issue that shows my problem

What happened?

When using custom armor attributes (changing the protection), the plugin does not reduce the damage (even if in the debug mode it says that the damage got reduced)

Expected Behaviour

The Damage should be reduced based on the armor protection value

Plugins

AdvancedReplay*, Banknotes*, BigDoors, BroadcastPlus, BungeeGuard, ChatDistancePlus*, ClearLag, ColoredSigns, ConsoleSpamFix, CoreProtect, CorpseReborn, CraftEnhance, Elevator, EpicRename, Essentials, EssentialsChat, EssentialsSpawn, GMDICostumModelData, HolographicDisplays, HubKick*, Images, InventoryRollbackPlus, InvSeePlusPlus, InvSeePlusPlus_Clear, InvSeePlusPlus_Give, ItemStackReloaded*, LockettePro, LoneLibs, LootBox*, LPC, LuckPerms, MVdWPlaceholderAPI*, NoPlugins, PlaceholderAPI, PlugManX (PlugMan), ProtocolLib, QualityArmory, ServersNPC, SharpSK, ShieldFix*, ShulkerBoxBackPacks, SimpleSit*, SkBee, SkinsRestorer, SkQuery, skRayFall, Skript, Skript-AnvilGUI*, skript-placeholders*, skript-reflect, TAB, TimeIsMoney, TradeSystem, TropeaTaser, Vault, WorldEdit, WorldGuard

Server Version

This server is running Purpur version git-Purpur-1171 (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT)

Relevant log output

No response