Clarity on what I need to do with the User Age Group API

I have the same question.  Following.

Great questions!  I wish I can help you, but I too am stuck in your same situation.  My app is a mixed age app, but it does not use any type of platform services.  It doesn't have any in-app ads or anything like that.  Meta blindly asks that we implement their user age API but does not show or describe how/where to do it.  It's so infuriating!  I just added UserAgeCategory.Report(AppAgeCategory.Ch); to a scene builder script in a Start() method.  That's all I could think of doing.  However, who knows if that complies with their requirements. 

Since the documentation said that we must choose one of two methods, and "This API should only be used if you know the date of birth (including the day, month, and year) of the user."  I don't have date of birth info from the players,  then I guess i need to use  UserAgeCategory.Get()

go I call:

UserAgeCategory.Get().OnComplete(GetUserAgeCallBack);

and then for callback:

void GetUserAgeCallBack(Message<UserAccountAgeCategory> msg)

but msg.IsError would always show an error.  So I can't verify whether i have successfully retrived the user age category.  And I also don't know what we are supposed to do with this age cat value after we retrieve it.  Do we simply call the get function, and that's all we need to do?

I agree with the  frustrations here. Here is what I am about to implement. Hope this helps. Uses language locale and considers app content rating in that locale which you will have to hard code like I did, and varies depending on your app. Also caches entitlement and if the age was appropriate in player prefs. Then you can reference it offline and throughout your app and only have to run this on the load screen. Useful to check age category later in the game if you have achievements/leaderboards etc so you don't use them if it's a child.

void Awake()
    {
        try
        {
            Core.AsyncInitialize();
            Entitlements.IsUserEntitledToApplication().OnComplete(EntitlementCallback);
            UserAgeCategory.Get().OnComplete(GetUserAgeCallBack);
        }
        catch (UnityException e)
        {
            Debug.LogError("Platform failed to initialize exception.");
            Debug.LogException(e);
        }
        if (PlayerPrefs.HasKey("ageIsOk"))
        {
            if(PlayerPrefs.GetInt("ageIsOk") == 1)
            {
                ageIsOK = true;
            }
            else
            {
                ageIsOK = false;
                userAgeErrorUI.SetActive(true);
            }
        }
        else
        {
            ageIsOK = false;
        }
        if (PlayerPrefs.HasKey("isEntitled"))
        {
            if (PlayerPrefs.GetInt("isEntitiled") == 1)
            {
                entitled = true;
            }
            else
            {
                entitled = false;
                entitlementErrorUI.SetActive(true);
            }
        }
        else
        {
            entitled = false;
        }
}
void Update(){
if(entitled && ageIsOk)
{
//run app
}
}

private void GetUserAgeCallBack(Message<UserAccountAgeCategory> msg)
    {
        var uaac = msg.GetUserAccountAgeCategory();
        if (!msg.IsError)
        {            
            string location = Oculus.Platform.Users.GetLoggedInUserLocale();
            int minAge;
            if (location.ToUpper().Contains("EN-US") || location.ToUpper().Contains("KO") || location.ToUpper().Contains("EN-AU") || location.ToUpper().Contains("PT-BR"))
            {
                minAge = 10;//child
            }
            else if (location.ToUpper().Contains("DE"))
            {
                minAge = 12;//child
            }
            else 
            {
                minAge = 16;//teen
            }
            if (uaac.AgeCategory == AccountAgeCategory.Ch)
            {
                UserAgeCategory.Report(AppAgeCategory.Ch);
                PlayerPrefs.SetString("ageCategory", "Ch");
                if (minAge < 13)
                {
                    ageOK = true;
                    PlayerPrefs.SetInt("ageIsOk", 1);
                }
                else
                {
                    ageOK = false;
                    PlayerPrefs.SetInt("ageIsOk", 0);
                }
            }
            else if (uaac.AgeCategory == AccountAgeCategory.Tn)
            {
                UserAgeCategory.Report(AppAgeCategory.Nch);
                PlayerPrefs.SetString("ageCategory", "Nch");
                ageOK = true;
                PlayerPrefs.SetInt("ageIsOk", 1);
            }
            else if (uaac.AgeCategory == AccountAgeCategory.Ad)
            {
                UserAgeCategory.Report(AppAgeCategory.Nch);
                PlayerPrefs.SetString("ageCategory", "Nch");
                ageOK = true;
                PlayerPrefs.SetInt("ageIsOk", 1);
            }
        }
        else
        {
            Debug.Log(msg.GetError());
        }
    }

    private void EntitlementCallback(Message msg)
    {
        if (!msg.IsError)
        {           
            PlayerPrefs.SetInt("isEntitled", 1);
        }
        else
        {
            PlayerPrefs.SetInt("isEntitled", 0);
        }
    }

I got my issue resolved.  So I just did a simple call of the function UserAgeCategory.Get(); once at the beginning of the app.  and that's all. I submitted the new build, grant the app access to the user age group. I did not do anything else after retrieving the ageCategory data from Meta. 

Meta approved it within 2 days.  Not sure what's the point of all this, but maybe it's for some legal issue, or perhaps they will enforce something more stringent in the future.  But at least it's resolved for now.

Have you not even needed to call a callback afterwards?
Has just adding that line of code been enough?
thanks for your help

Is there a special "is using" that is needed for this to function? 

We are trying to use the UserAgeCatagory.Get but it just says it doestn' exist. We updated to oculus platform SDK version 63 via the meta dev hub.

We currently have this

We haven't yet migrated to meta XR SDK. But we now have a solution. Even though the meta dev hub says oculus platform 63 is installed it clearly is not in our project. So we just downloaded the oculus integration package (depreciated) and installed the platform section from that. Which includes the latest Platform SDK, and that did update it in this project.

So now it does find the age related code! Thanks for your help!

This begs the question why does the dev hub think we have Oculus platform installed and what is it even installed for.

Sadly, I couldn't get the user age group API to comply with Meta and they took my app off the store.  I ended up changing it to a 13 to adult app to at least get it back up. 

I added the api get call as requested which runs once per session.  I'm not sure what else needs to be done.  Testing seems to be difficult (i.e. creating a fake account with different age groups and running the app).  Perhaps, I need to allow internet access within my manifest.  My app doesn't need internet access and shouldn't be allowed based on least privilege rules.   I don't know, there's something assumed that Unity and Meta won't include in their documentation, but I am at a loss...