To troubleshoot the Instagram push notifications issue further, I would recommend following in this exact order, the below steps to re-sync the Notifications:
1) Turn off Notifications for the Instagram account in the Hootsuite App:
2) Clear Message Memory/Reset App Data
3) Sign out of the Hootsuite App and Sign back in
4) Please turn the Notifications back on for the Instagram account
5) Schedule a test post, and check in the app for the notification, by clicking on the bell icon.
If you have any questions or if I can assist further with this process, please let me know and I would be happy to help.
Sandra here, with the Hootsuite Help Desk team. Thank you for reaching out to us on our Community Forum!
I have created a Support Ticket for you in order to further investigate the issue that you are experiencing with the Hootsuite mobile app for and the Instagram push notifications.
Myself, or one my colleagues, will be in touch with you shortly via email. Thank you for your patience!