WebExtensions not performing Automatic Update

I have an unlisted WebExtension that does not update automatically. I have tested this and waited for hours and the addon does not update. However Clicking on “Check for Updates” does work.

In the addon manifest file there is this:

{
"name": "Onelog",
"version": "1.9.1610.60",
"manifest_version": 2,

 "description": "Onelog extension",
  "applications": {
    "gecko": {
        "id": "its_addons_wrap@onelog.com",
        "update_url": "https://extensions.onelog.com/firefox/updates.json"
    }
  }
}

The updates.json has the following:

{
  "addons": {
  "its_addons_wrap@onelog.com": {
  "updates": [
     {
      "version": "1.9.1610.100",
      "update_link": "https://extensions.onelog.com/firefox/onelog_1.9.1610.100.xpi",
      "applications": {
        "gecko": {
          "strict_min_version": "45"
        }
      }
    }
  ]
}
 }
}

This has been tested using Firefox 49.0.1

Firefox checks for updates automatically roughly every 24 hours. If you wanted to test the auto update process you would either need to give it more time, or alter the update timer.

I’ve left this to update for over 24 hours and it still hasn’t updated.
I used the Firefox developer edition (version 51) and the update happened in a few hours.
Is there an issue with version 49?

Strangely it has updated now.
For some reason it was happening very slowly - over 48 hours to update.