Please make sure you're an admin of this Facebook page; if not that will need to be altered in your Facebook settings.
Please log into the Yumpingo dashboard and click the Reputation tab on the left.
Please then navigate to your name or venue at the top right of the toolbar > Locations and Groups:
1. Find the Facebook connector.
2. Disconnect the account by clicking on the ‘x’ icon on the right side.
3. Reconnect by clicking "Connect with Facebook."
4. Then, instead of clicking "Continue as Me," select "Edit Settings."
5. Next, make sure ALL pages that are listed are checked.
6. Click "Next."
7. Finally, click "Done."
8. Once done, you should be able to find your Instagram page in the page dropdown/list.