Help is needed in the integration of the Instagram application

Here are possible reasons why you can't link your Instagram business account to OneBOX:
An Instagram account is not a business account. To integrate with OneBOX, you must have an Instagram business account. To check if your account is a business account, go to your account settings and click on "Business". If you see the Business Profile section, your account is a business account.
The Instagram account is not connected to a third-party application. Integration with OneBOX requires that the Instagram business account is connected to third-party applications. To check if your account is connected to a third-party app, go to your account options and click on Security. In the "Applications and sites" section, you will see a list of all connected applications.
Instagram account does not meet OneBOX requirements. To integrate with OneBOX, an Instagram business account must meet the following requirements:
The account must be publicly accessible.
Account must have more than 100 subscribers.
Account must have more than 10 posts.
If you've checked all of these points and still can't link your Instagram business account to OneBOX, please contact OneBOX Support.
If you want to link an account to run ads to promote your business, don't do it. it is better to entrust this work to professionals from https://www.fusify.io/solution/contextual-targeting , who will quickly set up contextual targeting so that your ad is always in the center of attention of potential customers.
Hope this helps!