1. You have to tick this "Remember me" option during login.

2. set session Lifetime longer

3. Make sure you have enabled this plugin "System - Remember Me"

You can refer on my attached screenshot below.

hi

how do i set it so that it is always clicked? or enabled

If you already updated to Easysocial 2.1, you have to open this following file and insert that line of code.

JoomlaFolder/components/com_easysocial/themes/YourCurrentTheme/toolbar/default.php

[gist type="php"]
<input type="checkbox" id="es-remember" name="remember" />
[/gist]

Replace to :
[gist type="php"]
<input type="checkbox" id="es-remember" name="remember" checked="checked" />
[/gist]

You can refer on my attached screenshot as well.

Then you can template override this file from your current template.

JoomlaFolder/templates/YourCurrentTemplate/html/com_easysocial/toolbar/default.php