LE secure connection doesn't work

Hi all,

I have Bangle.js and Puck.js devices but couldn't establish LE secure connections between them.

Puck.js has the following service configuration:

NRF.setSecurity({lesc:1});
NRF.setServices({
  0xBCDE : {
    0xABCD : {
      value : "Hello",
      readable : true,
        security: {
          read: { // optional
            lesc: true
          }
        }
      }
    }
});

Bangle.js also has the LE secure connections enabled with the following configuration:

NRF.setSecurity({lesc:1});

Nevertheless, when Bangle.js connects to Puck.js and accesses to the read characteristic, it fails to read.

I also tried to connect to the read characteristic using the NRF connect application. After I connect to Puck.js and try to read the value of characteristic, it triggers bonding and stuck at that stage with no success.

Is there a known issue with the lesc or am I missing something?

Thanks for the support in advance...