ESPHome Temperature Sensor Update interval debugging

Hello All,
I am try to figure out why my nodes sometimes miss the updates.
Seen on the picture that the brown one did not update it’s value until 3 hours.
I am using 6 nodes:

Same codes (Of Course the names, ips, sensor addresses are different.

esphome:
  name: node-02
  platform: ESP8266
  board: esp01_1m

logger:

api:

ota:
  password: "51400f11298538deac2ed1ec6b97db5a"

wifi:
  ssid: "Telekom-84d7b5-2.4GHz"
  password: "KJZJRDZQGZ3C"

  ap:
    ssid: "Node-02 Fallback Hotspot"
    password: "jIE3nSyCpPoo"

  fast_connect: true

  manual_ip:
    static_ip: 192.168.0.111
    gateway: 192.168.0.1
    subnet: 255.255.255.0

captive_portal:

deep_sleep:
  run_duration: 60s
  sleep_duration: 5min


dallas:
  - pin: GPIO0
    update_interval: 10s
  

sensor:
  - platform: dallas
    address: 0xE03C01D075E47D28
    name: "Node_02_Temperature"
    accuracy_decimals: 1
    filters:
      - min:
          window_size: 7
          send_every: 4
          send_first_at: 2

If I am checking the logs via serial debugger, the nodes working properly. (Wake up, connect to hass, send data, go back to sleep.)

How can I figure out why the updates in a day is so hectic? I assume that sometimes they can not connect to wifi but no idea how can I debug it!
Any idea is welcomed!