Instagram Oauth issue

Hi I have a scenario that does instagram posts based off of a database. The issue is that I keep getting this error below:

The operation failed with an error. An unknown error has occurred. (1, OAuthException)

Make support says this is an issue on Instagram’s side and I should contact instagram but I doubt they would ever respond to something like this. I tried removing hashtags, shortening the post text. but nothing seems to be working. Sometimes it works and sometimes it doesnt.

Has anyone been able to fix this problem?