I am running Moodle 2.8, and had my site (http://moodle.in-sync.co) registered moodle.net/org (about 1 hour ago), I got the access key and had all mobile functions enabled, enforced all message triggers. However, I just can't get any notification by my iPhone/iPad, I can see the devices are registered on my site under the users' profile.

Can anybody help please?
BTW, I just got one bug fixed which is related with a DNS issue:
https://tracker.moodle.org/browse/MDLSITE-3884
Could it be the same reason that server messages.moodle.net can't resolve my domain name?

Thank you.