May I help you ??
What to do if my username is RED ?
1. Ensure you have provided us with the Instagram ‘Username‘ not ‘Email‘. And its Correct.
2. Recheck your Instagram password.
3. If both of them are correct, then you need to login to your account on your phone. And browse a bit, until Instagram shows you a dialog like this and press ‘This was me‘.
After doing the Applicable Action, wait for a few minutes. And Press Re-Login.
It should login by now, and color should be blue. But if still it does, we suggest you to try again after 24 hours.