Devices available, but greyed out and not updated
I have all devices in the homekit visible, but all are greyerd out and not updated.
In the homebridge log I find this:
[2019-5-22 09:35:16] [FritzPlatform] [INFO] Adding new accessory: FRITZ!Box 6490 Cable (kdg)
[2019-5-22 09:35:16] [FritzPlatform] [INFO] FRITZ!Box 6490 Cable (kdg): Successfully logged in!
[2019-5-22 09:35:17] [FritzPlatform] [INFO] Configuring accessory from cache: Rack
[2019-5-22 09:35:18] [FritzPlatform] [INFO] Configuring accessory from cache: Rack Temperature

Seems to be working for me ....

My config is:
        {
            "platform": "FritzPlatform",
            "devices": {
                "FRITZ!Box 6490 Cable (kdg)": {
                    "active": true,
                    "host": "XXX",
                    "port": 49000,
                    "username": "XXX",
                    "password": "XXX",
                    "type": "cable",
                    "master": true,
                    "mesh": false,
                    "readOnly": false,
                    "options": {
                        "reconnect": true,
                        "wifi2": [
                            false,
                            false
                        ],
                        "wifi5": [
                            false,
                            false
                        ],
                        "wifiGuest": [
                            false,
                            false
                        ],
                        "phoneBook": false,
                        "wps": [
                            false,
                            false
                        ],
                        "aw": [
                            false,
                            false
                        ],
                        "deflection": [
                            false,
                            false
                        ],
                        "led": [
                            false,
                            false
                        ],
                        "lock": [
                            false,
                            false
                        ]
                    }
                }
            },
            "smarthome": {
                "Rack": {
                    "active": true,
                    "ain": "XXX",
                    "tempSensor": true,
                    "devType": "switch"
                }
            },
            "broadband": {
                "active": true,
                "measureTime": 5
            },
            "callmonitor": {
                "active": false,
                "ip": "0.0.0.0",
                "port": 1012,
                "country": "",
                "incomingTo": [],
                "outgoingFrom": []
            },
            "presence": {
                "user": [
                    {
                        "active": false,
                        "name": "Test User",
                        "address": "0.0.0.0"
                    }
                ],
                "anyone": false,
                "offDelay": 90,
                "onDelay": 15
            },
            "wol": [
                {
                    "active": false,
                    "name": "Test Device",
                    "address": "00:00:00:00:00:00"
                }
            ],
            "alarm": {
                "active": false,
                "telNr": "",
                "duration": 30
            },
            "wakeup": {
                "active": false,
                "internNr": "",
                "duration": 30
            },
            "ringlock": {
                "active": false,
                "DECTphones": 1,
                "start": "11:00",
                "end": "22:00"
            },
            "extReboot": {
                "active": false,
                "cmdOn": "",
                "cmdOff": ""
            },
            "telegram": {
                "active": false,
                "token": "",
                "chatID": "",
                "presence": {
                    "in": "",
                    "out": "",
                    "anyoneIn": "",
                    "anyoneOut": ""
                },
                "callmonitor": {
                    "incoming": "",
                    "disconnected": ""
                },
                "alarm": {
                    "activated": "",
                    "deactivated": ""
                },
                "extReboot": {
                    "start": "",
                    "finish": ""
                }
            },
            "delay": 60,
            "OnDelay": 15,
            "polling": 5,
            "timeout": 5,
            "clearCache": false,
            "debug": true,
            "disableAutoSearch": false,
            "disableAutoConfig": false
        },

I have in addition to that the plugin homebridge-fritz-eve installed and a FritzBox with 7.01 and am not able to update.

With using the debug I get:
2019-05-22T07:47:17.811Z FritzPlatform Rack Temperature: No device with AIN: 087610136610 found or not intialized yet!
2019-05-22T07:47:22.811Z FritzPlatform Rack: No device with AIN: XXX found or not intialized yet!

The number is correct....

It seems that there is for me a problem connecting to the box correct.