I’ve been running into the same issue. I reached out to a former colleague who has an IG rep and they said that it’s kind of a crapshoot but the more you have of the below along with articles of incorporation, utility bill, etc., the better your chances.

-Another account is acting as you and/or there is confusion upon IG’s audience which account is the real brand

– Links of press (could be earned or placed) on the product proving clout

– Links of verified retailers/partners promoting your product on IG (for example- Whole Foods’ account, or one of their verified fan accounts, posting about it)

– Links of any celebs/notable figures using it, promoting it on social, etc.

Hope this helps.