Why cant I see myself talk in minecraft chat if im not op?

Alright so I have group manager and Vault. All my players can talk in chat. They aren't op, but when I demote myself to any rank and deop myself, I can't use chat! My plugins: TimTheEnchanter ,AdminCraft Panel,bGo,GroupManager,Kits,WorldEdit,MotdManager,TagAPI,PluginManager,Vault Multiverse-Core,PlayerHeads,WorldGuard,ClearChat,DisplayTags,CoreProtect,ChestShop ItemNamer,ClearLag,InfinityDispenser,PvPSoup,ForcedGrammar,Essentials,Citizens EssentialsSpawn,EssentialsChat,Info Board,xTeam,and iStaffChat. Those are my plugins.