Facebook requires that Instagram accounts be linked to a Facebook page in order for them to be connected to third party analytics platforms like InfluenceKit.
The good news is that whether you have a Facebook page or not, you can create one or link to an existing one easily.
You can link Instagram to a Facebook page from your Facebook settings or in the Instragram app, here's how to do both:
Here's how to link your Instagram account to a Facebook page via Instagram:
Here's how to link your Instagram account to a Facebook page via Facebook:
Don't hesitate to reach out if you need any additional help.