Did you get this fixed, having a similar issue with my account. One hashtag I use is keepasharpeye and it has made its own page with no name. While logged in to my personal account, I followed the directions to set up another account. Navigate to the program you just downloaded and execute it.
My facebook email is the same as my personal accounts on both platforms but is different for my business IG page. Can you give me a solution for this? What did help to remove that unwanted account from showing up on my app was to logout of all accounts.