Covers no longer work

I configured two covers in HA driven by a couple of Shelly 2.5
They worked fine untile last HA restart.
Now I can see the entities but if I try to open/close them nothing happens. I cannot see the message in MQTT server too.
Here you are my config:

- platform: group
  name: "Tapparelle"
  entities: 
    - cover.tapparella_camera
    - cover.tapparella_cameretta
 
- platform: mqtt
  unique_id: "tapparella_camera"
  name: "Tapparella camera"
  state_topic: "shellies/shellyswitch25-E66CFA/roller/0"   
  command_topic: "shellies/shellyswitch25-E66CFA/roller/0/command"  
  position_topic: "shellies/shellyswitch25-E66CFA/roller/0/pos"
  set_position_topic: "shellies/shellyswitch25-E66CFA/roller/0/commnad/pos"
  availability_topic: "shellies/shellyswitch25-E66CFA/online"
  payload_available: "true"
  payload_not_available: "false"
  payload_open: "open"
  payload_close: "close"
  payload_stop: "stop"
  state_open: "open"
  state_closed: "close"
  retain: true
  optimistic: false
  qos: 0
  position_open: 100
  position_closed: 0
  value_template: '{{ value.x }}'

- platform: mqtt
  unique_id: "tapparella_cameretta"
  name: "Tapparella cameretta"
  state_topic: "shellies/shellyswitch25-00B763/roller/0"
  command_topic: "shellies/shellyswitch25-00B763/roller/0/command"
  position_topic: "shellies/shellyswitch25-00B763/roller/0/pos"
  set_position_topic: "shellies/shellyswitch25-00B763/roller/0/commnad/pos"
  availability_topic: "shellies/shellyswitch25-00B763/online"
  payload_available: "true"
  payload_not_available: "false"
  payload_open: "open"
  payload_close: "close"
  payload_stop: "stop"
  state_open: "open"
  state_closed: "close"
  retain: true
  optimistic: false
  qos: 0
  position_open: 100
  position_closed: 0
  value_template: '{{ value.x }}'

in HA logs I can see only some warnings like:

WARNING (MainThread) [homeassistant.components.mqtt.cover] Payload is not integer within range:

No other errors.
What could be the problem?

Thanks