I am using this config:

  "Commands": [
    "buildinglimits",
    "limits",
    "limit",
    "blimit"
  ],
  "Permission cache time (seconds)": 700,
  "Warn about limits every X entities": 50,
  "Permissions": [
    {
      "Permission": "EntityLimit.DefaultPlayer",
      "Priority": 0,
      "Limits Global": {
        "assets/prefabs/deployable/lantern/lantern.deployed.prefab": 50,
        "assets/prefabs/deployable/jack o lantern/jackolantern.angry.prefab": 50,
        "assets/prefabs/deployable/jack o lantern/jackolantern.happy.prefab": 50,
        "assets/prefabs/misc/chinesenewyear/chineselantern/chineselantern.deployed.prefab": 50,
        "assets/prefabs/misc/halloween/candles/largecandleset.prefab": 50,
        "assets/prefabs/misc/halloween/candles/smallcandleset.prefab": 50,
        "assets/prefabs/deployable/furnace/furnace.prefab": 50,
        "assets/prefabs/deployable/furnace.large/furnace.large.prefab": 50,
        "assets/prefabs/deployable/fireplace/fireplace.deployed.prefab": 50,
        "assets/prefabs/deployable/playerioents/lights/simplelight.prefab": 50,
        "assets/prefabs/deployable/ceiling light/ceilinglight.deployed.prefab": 50
      },
      "Limits Building": {}
    },
    {
      "Permission": "EntityLimit.AdminNoLimit",
      "Priority": 1,
      "Limits Global": {
        "*": 10000
      },
      "Limits Building": {
        "*": 10000
      }
    }
  ​

Even when i set the "warn about entities" to 50. It will count every single one and spam it :\

It messages when 10 left or every x50 entity placed

Yes, and in my case none of both requirements met. 
There are 40~ entities left and it spams on every place instead of every 50

same - seeing it spam chat is annoying and distracting