Add-on not listed in Android AMO site, but listed under Windows platform

Our developer submitted a WebExtension add-on to AMO a while ago, which is publicly available. I could find it using search on Firefox Add-ons page. I tried to install the add-on on my mobile Firefox browser. I searched in the add-ons store, but it is not available. It appears that Firefox for Android goes to Android Add-ons page. I searched the same Android add-ons page from desktop, but the extension could not be found. I was told that the add-on was submitted last time with the "All Platforms" option selected. I could not find any documentation specific to submitting add-ons to the Android add-ons page. Are they different? Could it be a mistake during submitting the add-on? Or, is it because of the manifest file?

Here are the sections in the manifest.json file:

{
    "manifest_version": 2,
    "name": "Extension Name",
    "short_name": "EXTNSHORTN",
    "version": "0.0.1",

    "description": "some description",
    "icons": {
        "19": "images/icon19.png",
        "38": "images/icon38.png",
        "128": "images/icon.png"
    },

    "applications": {
        "gecko": {
            "id": "abc@def.com",
            "strict_min_version": "48.0"
        }
    },

    "background": {
        "scripts": [
            "a.js", "b.js", "c.js", "d.js", "e.js", "f.js", "g.js", "h.js",
            "background.js"
        ]
    },

    "permissions": [
        "alarms",
        "idle",
        "tabs",
        "activeTab",
        "<all_urls>",
        "notifications"
    ],
    "browser_action": {
        "browser_style": false,
        "default_icon": "images/icon.png",
        "default_title": "same title",
        "default_popup": "popup1.html"
    },
    "content_scripts": [
        {
            "matches": ["https://www.exmple.com/*"],
            "js": ["p.js"]
        }
    ],
    "web_accessible_resources": [
        "web_accessible/*"
    ]
}

The extension name is Engrip Extension. How do we fix this so the same extension is available both for Firefox on desktop and Firefox for Android?

WebExtension manifest.json files do not have any method to explicitly specify which applications they are compatible with. This is information which should be specified when the add-on is uploaded to AMO. The confusion is probably that "Firefox for Android" is considered a different "Application", not a "Platform". In this context, applications are the programs into which your add-on can be loaded. For example: "Firefox", "Firefox for Android", "Thunderbird", etc. Platforms are specifically "Linux", "Mac OS X", and "Windows". Yes, Android is actually a platform, but this is just the way it is organized.

Fortunately, you can change the supported applications for the current version from the AMO control panel for your add-on.

• From the main developer console page for your add-on select "Manage Status & Versions" (in a blue box on the left, just above a separator line). The direct URL should be this
• Under "Listed versions"➞"Currently on AMO" select the most recent version. This should be "Version 0.10.9".
• On that page under "Manage Version xxx"➞"Compatibility" select "Add Another Application…"
• Select "Firefox for Android" and complete which versions you are compatible with.
• Save your changes.

It will look something like: