Setting the Redirect Callback URL

The standard redirect / callback URL to set for all gateways is: http(s)://{$your_site}/member.php?action=login&gateway={$gateway}

For example, if your site is forums.com and you are making app for Google, the redirect URL you have to set is: https://forums.com/member.php?action=login&gateway=google

For those providers who don't allow fragmented callback URL, just set: https://forums.com/member.php ...and it will all work good.

The plugin forwards the exact required redirect URL while making calls to services. By standard rule of oAuth2 the service / gateway will only match the domain of the provided redirect URL with the one already set in the app. If the domain matches the connection is allowed.