GUI does not appearNot An Issue

I have permission, and I'm getting the correct message feedback, but the GUI just simply doesn't appear.

My config:

{
  "Global settings": {
    "Default enabled": true,
    "Default UI style (center, lite, right, custom)": "right",
    "Enable Backpacks plugin support": true,
    "Loot all delay in seconds (0 to disable)": 0,
    "Enable loot all on the sleepers": false,
    "Auto loot all enabled by default": false,
    "Default enabled container types": {
      "Belt": false,
      "Main": true,
      "Wear": false
    },
    "Chat steamID icon": 0,
    "Chat command": [
      "qs",
      "quicksort"
    ],
    "Excluded containers": [
      "autoturret_deployed",
      "dropbox.deployed",
      "flameturret.deployed",
      "guntrap.deployed",
      "sam_site_turret_deployed",
      "sam_static",
      "scientist_turret_any",
      "scientist_turret_lr300",
      "wall.frame.shopfront",
      "wall.frame.shopfront.metal",
      "wall.frame.shopfront.metal.static"
    ]
  },
  "Custom UI Settings": {
    "AnchorsMin": "0.5 1.0",
    "AnchorsMax": "0.5 1.0",
    "OffsetsMin": "192 -137",
    "OffsetsMax": "573 0",
    "Color": "0.5 0.5 0.5 0.33",
    "ButtonsColor": "0.75 0.43 0.18 0.8",
    "LootAllColor": "0.41 0.50 0.25 0.8",
    "TextColor": "0.77 0.92 0.67 0.8",
    "TextSize": 16,
    "CategoriesTextSize": 14
  }
}

Not sure what is the problem you faced, but it works as expected for me. I can't fix something I can't reproduce.
P.S. I gope you are looting container when expecting to see UI...

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