Instagram Errors While Publishing
Before publishing to Instagram, please make sure you're following these requirements while designing your post.
If you're still facing an error while publishing to Instagram, please find the most frequent errors below with their solution:
Error 1:
There is more than one image
Solution:
Please ensure that you only post a single image. Multiple images (or carousel posts aren't supported.)
Error 2:
The image has an unsupported aspect ratio.
Solution:
The images that you post on Instagram need to have these specific aspect ratios.
Error 3:
Your device is not registered
Solution:
You have integrated Instagram from the web application but have not installed the mobile application due to which it is not registered.

Error 4:
Push Notification not enabled on Mobile Device
Solution:

Another reason for the notification not going through is due to the Device being changed. This happens when you uninstall your application and re-install it again with the latest version from the Apple Store or Google Play Store.
If you happen to re-install the application on your device, you will have to perform Solution 5 again to re-register it.
Error 5:
Device not registered
Solution:
If you are facing this error, please follow these steps:
If you have performed the above steps but still not receiving a message for Instagram, please get in touch with Support.
Error 10:
Application does not have permission for this action<br><img src="https://s3.amazonaws.com/helpscout.net/docs/assets/576134c4c6979153877cd3cc/images/6058e414207e3b1188e1ec25/file-P3QlqHW8zW.png">
Solution:
This is due to the lack of permission(s) granted to ContentStudio during the connection. Please follow this article to reconnect your account with ContentStudio