Permissions not working

So I've got this code for my servers plugin:

Code:java

 if (p.getUniqueId().toString().equalsIgnoreCase(GIANS_UUID) || p.getUniqueId().toString().equalsIgnoreCase(NICKS_UUID) || p.getUniqueId().toString().equalsIgnoreCase(DYLANS_UUID)) {
return "§4§lOWNER";
}
else if (p.getUniqueId().toString().equalsIgnoreCase(BRETTS_UUID) || p.getUniqueId().toString().equalsIgnoreCase(AIDANS_UUID)) {
return "§c§lADMIN";
}
else if (p.hasPermission("xRank.VIP")) {
return "§e§lVIP";
}
else if (p.hasPermission("xRank.MOD")) {
return "§5§lMOD";
}
else if (p.hasPermission("xRank.DIAMOND")) {
return "§b§lDIAMOND";
}
else if (p.hasPermission("xRank.GOLD")) {
return "§6§lGOLD";
}
else if (p.hasPermission("xRank.IRON")) {
return "§7§lIRON";
}
else if (p.hasPermission("xRank.MEMBER")) {
return "§8§lMEMBER";
}
else {
p.kickPlayer("§4§l>> §cFailed to download your Rank Data, Please retry Later §4§l<<");
return "";
}

If the player's UUID is one of the owners or admins it works fine, If the player joining is OPed it returns VIP because its the 1st perm being checked, But if a player join (No Matter What Rank) it ALLWAYS returns: p.kickPlayer("§4§l>> §cFailed to download your Rank Data, Please retry Later §4§l<<");
return "";
Any ideas ?
Regards candyfloss20

 

The player who joins the server doesn't have any of theses permissions, I suppose.