Here is the step by step tutorial that how to use this website. If you not interesting to watch video i want to explain here. This is very important that your post should be public. You need to also to change your followers setting to public. In the step 1 visit access token page. Enter your instagram email and password in the given box. click on the submit button. You will see some text in the box copy all the text from the box and paste it on the main page and submit login button.