Meta Audience Network (Facebook) Test Mode doesn't work

[dfabulich]

I've got an app live in the store that's successfully requesting Facebook Meta Audience Network ads, according to the Meta Monetization Manager console, but I've never been able to test it successfully in Test Mode.

In my production app on the store, I launch the MAX Mediation Debugger, tap "Facebook" under "Completed Integrations," tap "Enable" under Test Mode. I get a pop-up, "Restart Required." I swipe up and force quit the app, then relaunch an navigate back to the Facebook section. Now I can tap on Test Mode. But when I tap "Load" on Banner or Interstitial (the two ad units I support), I get an error message:

"Failed to load BANNER with error code: 204"

Again, these ads are working fine; Meta is paying me for them, so I know they work. It's just Test Mode that doesn't seem to work.

[ddaddy]

I'm also having trouble getting Test Ads to load with other networks.

I have implemented Vungle, have the app in Test Mode on their dashboard so it should be firing test ads.
I open the Mediation Debugger and go through the Ad Units, select Vungle, then hit the Load button at the bottom.
The console prints:

**************************************************
NO FILL received:
..ID: "07b07f7390ac85b7"
..FORMAT: "MREC"
..SDK KEY: "vIk0_MRbvoTzcq...."
..PACKAGE NAME: "com.mycompany.myapp"
..Reason: (
        {
        code = 1000;
        msg = "Ad network does not match filter ad networks list";
    }
)
**************************************************

This should receive an a test app.

I tried exactly the same thing with ByteDance/Pangle and got exactly the same response.
My MAX dashboard was setup 2 hours ago and the Mediation Debugger reports the correct ID's, so that's not the issue.

It looks like something might be broken in the SDK?

[ddaddy]

Mine is working now. Turns out I needed to add Vungle as waterfall other As it doesn’t have bidding enabled by default.

[ParthaPokkt]

And how about Facebook Native ads? They never appear and no logs from Facebook server upon calling native ads using mediation in AppLovin Max. And also always no fill when called using Mediation Debugger.

[github-actions]

This issue is stale because it has been open for 30 days with no activity.