Every stream gets PENDING status right after publish or play request. In case of playback, status changes from PENDING to PLAYING if playback successfully starts, or to FAILED if not.
In your logs we see playStream requests in PENDING status for streams that is already unpublished, then they changes to FAILED, and this is normal behaviour.
You can check if stream is published on server with
REST API query
Code:
http://host:8081/rest-api/stream/find
{
"name": "HDMI2525",
"status": "PUBLISHING"
}
If stream is published, you will see it in response, if not, response will be 404 Not found.
So if your RTMP streams are pushed correctly to Wowza and played from it, we need traffic dump to check why WCS supposes stream to be unpublished. If problem occurs with Wowza too, you should check Vidiu Pro setup.