distribute sync payitem/client/employee

Xero.php

         $employees = $this->getEmployees();
         //add new staff
         foreach ( $employees as $e){
-            $login = $e->getContactID();
+            $login = $e->getEmployeeID();
             $user = get_user_by('login', $login);
             if ($user === false){
                 $this->add_new_staff($e);
             }else{
                 $msg = "==(Add Client failed)==";
                 $this->logConsole($msg);
+                $msg = sprintf("ADD Client name=[%s] {%s} Failed\n",  $contact->getName(), $contact->getContactID());
+                error_log("ACARE add client failed: $msg");
             }
         }
     }
             }else{
                 $msg = "==(Add staff failed)==";
                 $this->logConsole($msg);
+                
+                $msg = sprintf("ADD employee name=[%s %s] {%s} Failed\n",
+                    $employee->getFirstName(),
+                    $employee->getLastName(),
+                    $employee->getEmployeeID());
+                error_log("ACARE add employee failed: $msg");
             }
         }
     }
     }
 
     private function add_new_client(){
-        if ($this->too_close_to_add_employee()){
+        if ($this->too_close_to_add_client()){
             return;
         }
         update_option('bts_add_client_last_sync', time());
         
     }
     private function add_new_employee(){
-        if ($this->too_close_to_add_client()){
+        if ($this->too_close_to_add_employee()){
             return;
         }
         update_option('bts_add_employee_last_sync', time());
-        $this->sync_employee(true);//add new only;
+        $this->sync_employees(true);//add new only;
     }
     
     private function sync_payroll_calendar()
         $lastsync = get_option('bts_add_employee_last_sync', 0);
         $now = time();
         $diff = $now - (int) $lastsync;
-        return $diff < 1.1 * $this->minimum_sync_interval_in_seconds; //default 1.1 * 10 minutes
+        return $diff < 1.5 * $this->minimum_sync_interval_in_seconds; //default 1.1 * 10 minutes
     }
     private function too_close_to_add_client(){
         $lastsync = get_option('bts_add_client_last_sync', 0);
         $now = time();
         $diff = $now - (int) $lastsync;
-        return $diff < 1.2 * $this->minimum_sync_interval_in_seconds; //default 1.2 * 10 minutes
+        return $diff < 2.0 * $this->minimum_sync_interval_in_seconds; //default 1.2 * 10 minutes
     }
     private function too_close_to_sync_payroll_calendar(){
         $lastsync = get_option('bts_pay_roll_calendar_last_sync', 0);
         $now = time();
         $diff = $now - (int) $lastsync;
-        return $diff < 1.3 * $this->minimum_sync_interval_in_seconds; //default 1.3 * 10 minutes
+        return $diff < 3.0 * $this->minimum_sync_interval_in_seconds; //default 1.3 * 10 minutes
     }
     
     public function get_payroll_calendar()