CYBLE-202007-EVAL disconnect frequently

Hello,

I'm trying to get CYBLE-202007-EVAL to run Find Me Profile.

I plug the board into the CY8CKIT-042-BLE-A baseboard and communicate with CySmart.

But after connect for an hour, it just disconnect and the reason is CONNECT_TIMEOUT.

To extend range of BLE, I write the below code into file which I get from datasheet.

/* define the test register to switch the PA/LNA hardware control pins */ 
#define CYREG_SRSS_TST_DDFT_CTRL 0x40030008

/* Mandatory events to be handled by BLE application code */ 
case CYBLE_EVT_STACK_ON: 
/* Configure the Link Layer to automatically switch PA control pin P3[2] and LNA control pin P3[3] */ 
CY_SET_XTND_REG32((void CYFAR *)(CYREG_BLE_BLESS_RF_CONFIG), 0x0331); 
CY_SET_XTND_REG32((void CYFAR *)(CYREG_SRSS_TST_DDFT_CTRL), 0x80000302);

Does anyone have any ideas on this issue?

Thanks