If you our user of InstaCaptain.com and you are getting this error then there is no need to worry. For new Instagram accounts, errors like this do occur if you have not verified your account, especially with a mobile number AND if you’ve not used the account on the official Instagram mobile app.
In this case, we advise you to verify the account (preferably with a mobile number) and also perform tasks such as Follow, Like and comment on the official Instagram mobile app. Pause any activity on our platform for 24-72 hours and then start again. This must get it sorted out.
If you have tried it and still it doesn’t help, please try logging in again after 72 hours.