The application is not added to the Odnoklassniki API, how to understand what is the error?

Question

Classmates

To test the Odnoklassniki API integration (inviting friends, authorization, etc.), I start the game in OK with the following settings.

When you click on the "save" button, nothing happens, the page looks the same, the application is not added. What am I doing wrong?
PS In the list of IP addresses, they entered both one address and through ; Does not help

Answer 1

Problem solved. It consisted in the fact that the links to the icons were too long. Link length must be no more than 256