Multiscrape - please help with scraping Bayrol site

You have to find the DeviceID after login. In my Case cid=19933.
Then this Code works:

multiscrape:
  - name: Bayrol
    resource: https://www.bayrol-poolaccess.de/webview/getdata.php?cid=19933
    log_response: true
    scan_interval: 30
    form_submit:
      submit_once: true
      resource: https://www.bayrol-poolaccess.de/webview/p/login.php
      select: '#form_login'
      input:
        username: # Mailadress
        password: # Password
        autologin: None
    sensor:
      - unique_id: Pool PH Wert
        name: Pool PH Wert
        select: 'body > div > div:nth-child(2) > h1'
      - unique_id: Redoxwert
        name: Redoxwert
        unit_of_measurement: "mV"
        select: 'body > div > div:nth-child(3) > h1'
      - unique_id: Pooltemperatur
        name: Pooltemperatur
        unit_of_measurement: "°C"
        select: 'body > div > div:nth-child(4) > h1'
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