Stuck on 'Ads API Access Level:development' - facebook-graph-api

Question

I try to have an app that can pause/resume my adset (accounts owned by myself).
I get no error message(or anything) output when requesting this
$adset = new AdSet($adsetid);
$adset->campaign_status = AdSet::STATUS_ACTIVE;
try{
$adset->updateSelf();
} catch (RequestException $e) {
$response = json_decode($e->getResponse()->getBody(), true);
var_dump($response);
}
But I see that the adset status did not change.
Now, I do see that the Marketing API, Settings section shows me that the API access Level is development and the app doesn't have Ads management standard access.
When I check permissions at App review > Permissions and features it shows 'Standard access' and 'ready to use'. (however not 'Active')
And at the same time my request count and error rate in the past 30 days are acceptable.
I don't understand what is missing to make it work. Can anyone help me out?

Answer 1

The code I have shown in my question was based on the code I copied from the Facebook marketing API documentation.
Strangely when I simulated my request using the Graph API Explorer and hit the "Get code" button it will suggest you a different code.
When I used that code instead of the code of the marketing API docs it did seem to work just as expected.
This code worked as opposed to the code from the docs:
$adsetid = "YOUR ADSET ID";
$access_token = "YOUR ACCESS TOKEN";
try {
$response = $fb->post(
'/'.$adsetid,
array (
'fields' => 'status',
'status' => 'ACTIVE'
),
$access_token
);
} catch(FacebookExceptionsFacebookResponseException $e) {
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(FacebookExceptionsFacebookSDKException $e) {
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
$graphNode = $response->getGraphNode();