problem with po file in membership plugin

I have few things that not translate in the plugin:
1. No coupons yet. - membership\membershipincludes\classes\membershipadmin.php (1 hit)
Line 14517: <td colspan="8"><?php _e('No coupons yet.', 'psts') ?></td>
2. This is where you manage the access levels of your site. membership\membershipincludes\help\header.levels.php (1 hit)
Line 1: <p><?php _e("This is where you manage the access levels of your site. It\'s recommended that you create a basic '\free users\' access level, for site visitors who aren\'t yet paying members. You can then create as many more access levels as you wish. Use the drag and drop controls to choose which content becomes available at each level.", 'membership'); ?></p>
3. Dismiss - \membership\membershipincludes\classes\class.wizard.php (7 hits)
Line 383: " class="welcome-panel-close">Dismiss
4. membership tutorial membership\membershipincludes\classes\class.tutorial.php (2 hits)
Line 56: $this->_membership_tutorial = new Pointer_Tutorial('membership', __('Membership tutorial', 'membership'), false, false);
Line 59: $this->_wizard_tutorial = new Pointer_Tutorial('membershipwizard', __('Membership tutorial', 'membership'), false, false);
5. Starting Point
membership\membershipincludes\classes\membershipadmin.php (1 hit)
Line 8437: <h2 class="sidebar-name">Starting Point</h2>