[AC Question]

Yesterday I did factory reset on my Galaxy S3 I9300 and thereafter push notification at Pages Menager won't work. At Facebook and Messenger apps everything it's ok. Push notification feature at Pages Menager it's very important feature for me, because I have big fanpage and users very often write to me and now I don't see notification about new messages. Of course I can turn off notification via e-mail or SMS, but it's not solution.
I checked a setting at app and phone - everything is right. Reboot phone and reinstall app not helped. I tried to delete cache files and app data - no results. Anyone could help me please?