52833 LONG RANGE UART_APP_BLE Peripherals

Question

I get long range demo code for 52840 on the web: 
 long_range_demo_15.2 
 and modify the code to test the 52833 long range feature; 
 52833 long range peripheral demo.zip 
 MAINLY code: 
 static void advertising_init(void)
{
 uint32_t err_code;
 ble_advertising_init_t init;

 memset(&init, 0, sizeof(init));

 init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
 init.advdata.include_appearance = false;
+ init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;//BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE

 init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
 init.srdata.uuids_complete.p_uuids = m_adv_uuids;

 init.config.ble_adv_fast_enabled = true;
 init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
 init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
+ init.config.ble_adv_primary_phy = BLE_GAP_PHY_CODED;
+ init.config.ble_adv_secondary_phy = BLE_GAP_PHY_CODED;
+ init.config.ble_adv_extended_enabled = true;
 init.evt_handler = on_adv_evt;

 err_code = ble_advertising_init(&m_advertising, &init);
 APP_ERROR_CHECK(err_code);

 ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}

*******************
 // Copy advertising data.
 if (!p_advertising->initialized)
 {
 p_advertising->adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET;
 }
 p_advertising->adv_data.adv_data.p_data = p_advertising->enc_advdata[0];
 p_advertising->adv_data.adv_data.len = adv_set_data_size_max_get(p_advertising);

 ret = ble_advdata_encode(&p_init->advdata, p_advertising->enc_advdata[0], &p_advertising->adv_data.adv_data.len);
 VERIFY_SUCCESS(ret);

+ p_advertising->adv_data.scan_rsp_data.p_data = NULL;
+ p_advertising->adv_data.scan_rsp_data.len = 0;

-// p_advertising->adv_data.scan_rsp_data.p_data = p_advertising->enc_scan_rsp_data[0];
-// p_advertising->adv_data.scan_rsp_data.len = adv_set_data_size_max_get(p_advertising);

-// ret = ble_advdata_encode(&p_init->srdata,
-// p_advertising->adv_data.scan_rsp_data.p_data,
-// &p_advertising->adv_data.scan_rsp_data.len);
-// VERIFY_SUCCESS(ret);

***************

static void advertising_start(void)
{
 uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
 APP_ERROR_CHECK(err_code);
 //Optional: Change output power
+ err_code = sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, m_advertising.adv_handle, 8);
+ APP_ERROR_CHECK(err_code);
}
*************

My question is: WHY IT cannot be connected to the long-range-DK 52840? (THE led1 is always flicking!!) 
 
 WHAT IS THE PROBLEM FOR THE LONG RANGE TEST ON 52833 DK？？？？