Branch.io initSession returns empty BranchUniversalObject JSON and BranchLinkProperties JSON

[johnnypi6]

Hi, Many thanks for your ongoing support for the Unity community.

I'm trying to add a sharing feature to my existing app using Unity Branch SDK.
Branch SDK version 0.6.5.

I created the following deep links using the Unity Branch SDK.

https://xleague.app.link/r7DxT2wkZ5
https://xleague.app.link/4WPwY7jm05
https://xleague.app.link/LFfAOZuo05
https://xleague.app.link/hVR3fr0n05

And I retrieved BranchUniversalObject and BranchLinkProperties using the following code.

void Start()
{
    Branch.initSession(CallbackWithBranchUniversalObject);
}

void CallbackWithBranchUniversalObject(BranchUniversalObject buo, BranchLinkProperties linkProps, string error)
{
    if (error != null)
        Debug.Log($"Error : {error}");
    else
    {
        Debug.Log(buo.ToJsonString());
        Debug.Log(linkProps.ToJsonString());
        if (linkProps.controlParams.ContainsKey("$deviceID"))
        {
            string senderDeviceID = linkProps.controlParams["$deviceID"];
            ...
        }
    }
}

If I click the shared link on iPhone or Android, it will redirect me to Appstore or Google Play Store. I can install the app on the Appstore and Google Play Store.
But when I opened the app, initSession returns empty BranchUniversalObject JSON and BranchLinkProperties JSON.

BranchUniversalObject JSON
{
"$canonical_identifier": "",
"$canonical_url": "",
"$og_title": "",
"$og_description": "",
"$og_image_url": "",
"$publicly_indexable": "0",
"$locally_indexable": "0",
"$exp_date": "69425078400000",
"$keywords": [],
"metadata": "{}"
}

BranchLinkProperties JSON
{
"~tags": [],
"~feature": "",
"~alias": "",
"~channel": "",
"~stage": "",
"~duration": "0",
"control_params": {}
}

What makes me more confused is that initSession sometimes returns correct BranchUniversalObject JSON and BranchLinkProperties JSON as expected. I guess the Branch Short URL that I created only works for the first click.
I'd be much appreciated you if you could help me.

[johnnypi6]

I reposted this issue.
#186