Login Form

1. i would like customize the modal pop window

We provide the mechanism for you to create your own theme for styling the SCLogin module. You can review the documentation on how to do this here . Of course, you may always create your own template override of the module view files in the /templates/YOUR_TEMPLATE/html/mod_sclogin directory.

2. i would like to show user image either from social account either from joomla system (depends on how user has logged in). Now i have set it to social

This is not a current capability of SCLogin. In order to do this, you would need to tweak the code in /modules/mod_sclogin/helper.php in the getSocialAvatar method around line 402. We currently check to see whether it's set to 'social' and retrieve the social avatar that way. If it's not set to social, then we get the avatar from the supported third-party components. You can add logic to figure out how the user is logged in here (or create a template override of the logout.php file which calls this method).

3. i have installed alpha user points extension. can i intergrate it so that on the login module a button with the link of the user profile shows which redirects to alpha user profile ?

You should be able to override the /tmpl/logout.php with a standard Joomla template override. This is the file that is displayed when a user is logged in.

-Melissa

there is a problem with logout redirection. it doesn't load in same page as i have in settings.
also sometimes when i login with joomla user credentials it doesn't login or it redirects to invalid token white page (i have no caching)

These two issues were introduced by Joomla 3.6. Follow the threads here:
www.sourcecoast.com/forums/non-commercia...rectly-on-joomla-360
and
issues.joomla.org/tracker/joomla-cms/11169

login module is on top left ("Σύνδεση"). also i would like this functionality from the login of your form (see attachement)

The options that you have the arrow pointing to in the screenshot are controlled by the SCLogin > Login View Settings tab > 'Show Forgot Username' and 'Show Forgot Password' options.