Autorise Instagram failed

hello, try to install the plugin, but after autorise Instargam i have an error:

{“code”: 400, “error_type”: “OAuthException”, “error_message”: “Redirect URI does not match registered redirect URI”}

for Redirect URI I type:
http://mysite.com/wp-admin/options-general.php?page=instagrabagram-setting-admin

Where am I wrong?

https://wordpress.org/plugins/insta-grabagram/