Popup card in Homekit-panel-card

Configuration
1

Hey there.

I am trying to configure my dashboard with Homekit panel card. https://github.com/DBuit/Homekit-panel-card
It is described how can I get a popup card when I hold on my card. I am trying to this for my air conditioner (connected through SmartThings). The popup card is made by the same guy. https://github.com/DBuit/thermostat-popup-card

This is what I have in my overview (the card shows up fine, I see the current temperature from AC sensor, and the temperature of the last AC on that was set)

              - entity: climate.room_air_conditioner
                popup:
                  type: 'custom:thermostat-popup-card'

This is what I have in ui-lovelace.yaml

popup_cards:
  climate.room_air_conditioner:
    title: "Dining room AC"
    style:
      position: fixed
      z-index: 999
      top: 0
      left: 0
      height: 100%
      width: 100%
      display: block
      align-items: center
      justify-content: center
      background: rgba(0, 0, 0, 0.8)
      flex-direction: column
      margin: 0
      "--iron-icon-fill-color": "#FFF"
    card:
      type: custom:thermostat-popup-card
      entity: climate.room_air_conditioner

The popup does not popup neither on pc, on tablet nor phone. When I hold it on the phone/table it has haptic feedback (small vibration) but nothing pops up.
What am I doing wrong here? Thank you.