- Go to Instagram website and connect with your logins
- Go to the Developper page and click on Register Your Application
- You will be asked to your website url, your phone number (you can give a fake number) and a short description
- Submit and click again on Register Your Application
- Enter a name (the name cannot contain the word instagram), a description and your website url again
- On the field OAuth redirect_uri, paste the URL above and click on Register
- Now copy the Client ID and the Client Secret to Instagram2Piwigo configuration
- You're done!