I have a personal Instagram account and n Instagram account For each of my online store (4 of them) not business accounts. I closed one of my online stores and want to delete one of the accounts without affecting the others. I don't believe I have the single log in for I have to switch back and forth to each account by singing out of one and then pressing log in to one of the other accounts
To delete the account, log in to the account you want to delete, then follow these instructions on how to delete an Instagram account. Also, considering that you log in to multiple Instagram accounts, I think each account has its own credentials.