No entities appearing in HA

Hi, I try to integrate LYWSD03MMC sensors to my homeassistant. I followed the installation process without any problem. I already connect the device to the Xiaomi Home app and I correctly receive the value. I use a raspberry pi 4, my ble device is hci0 as expected, I don’t have any problems scanning ble device with hcitool and gatttool I configured the configuration.yaml file with this configuration:

ble_monitor:
  hci_interface: 0
  discovery: True
  active_scan: False
  report_unknown: False
  batt_entities: False
  rounding: True
  decimals: 1
  period: 60
  log_spikes: False
  use_median: False
  restore_state: False
  devices:
    - mac: 'A4:C1:38:XX:XX:XX'
      name: 'test sensor ble monitor'
      encryption_key: '217C568CF5D22808DA20181502DXXXXX'
      temperature_unit: C

Once I reload homehassistant I can’t find any entities appearing in the list, I was expecting to see it appearting to integrate is correctly. I also tried with the “User Interface Configuration” but same result.

Am I doing something wrong or am I missing something to make it works ?

Thanks for your work and your help.

[Thibaud45]

Hey, I just find out that the key wasnt correct, maybe after the reset of the device it changes. It works now, I can have the data. Thanks a lot again.

[Thibaud45]

Hi, Thanks a lot for your help, After a full clean up and after following your FAQ link I no longer have the error. However I do have this error now

2020-12-24 10:47:00 ERROR (Thread-3) [custom_components.ble_monitor] Decryption failed: MAC check failed 2020-12-24 10:47:00 ERROR (Thread-3) [custom_components.ble_monitor] token: 767021a9 2020-12-24 10:47:00 ERROR (Thread-3) [custom_components.ble_monitor] nonce: 86979e38c1a45b0522060000 2020-12-24 10:47:00 ERROR (Thread-3) [custom_components.ble_monitor] encrypted_payload: eb82d14e5d060000767021a9 2020-12-24 10:47:00 ERROR (Thread-3) [custom_components.ble_monitor] cipherpayload: eb82d14e5d

I checked the mac address with hcitool lescan and also with the xiaomi home app. All seems good