Do not get request after registering flight alert

Hi team

I had set alert for flights and get following alert ids (26385511, 26384710, 26384709, 26360000, 26359999) but after that I haven’t get request on AlertPageUrl.

Please can you advise me with this.

Regards
Hovhannes

Alert 26384709 generated 3 delivered alerts on 7/26/2018 and we received successful HTTP 200 responses. (26385511, 26384710 did not generate any matching alerts. I didn’t check the others.)

Your alert page appears to return some html response. We recommend returning a simple text response with an ok or failure or potentially your own database record id so that you can diagnose errors more easily.

You can use this page to see the status of recently delivered alerts: https://flightaware.com/commercial/flightxml/send.rvt