Incorrect login/password error

There are a few things to check if you get Wrong login/password error

1)  To be sure you use the correct password, try to login into your Instagram via the web interface. 

2) Make sure you log in using Instagram credentials and not via Facebook

3) We have seen a few cases when Instagram resets an account's password for an unknown reason. You can try to regain access to web Instagram using the reset password form