my app (id 2533584627032539) cant get a test lead from developers.facebook.com/tools/lead-ads-testing/ page. its still in 'pending' staus, error message 'Updated lead is still being processed and will be delivered shortly' altough i succesfully getting a webhook from leadgen test button on my app page.

app is subscribed

POST graph.facebook.com/v21.0/449255368268178/subscribed_apps?access_token=XXXX

{ "data": [ { "link": "https://www.facebook.com/games/?app_id=2533584627032539", "name": "test", "id": "2533584627032539", "subscribed_fields": [ "leadgen" ] } ] }