We are facing some problems in PubSubHubBub subscription renewal.
which was expired after every 10 days so we again renew it before expiration.
Now PubSubHubBub server does not send verification request (Subscription request) to callback url.
so we are now unable to renew some feeds but renewal of some feeds are still
Means PubSubHubBub send verification response to callback url for only some feeds url.
Any help would be much appreciated.