This article describes how to use your IMPress for IDX Broker WordPress Plugin. If you haven't already installed the plugin, you can find plugin installation instructions here.
Add IDX Widgets to your site
IDX Widgets give you a way to promote your Featured Listings, Agents, and any Custom Links. In addition, you have access to Quick Search forms and several more powerful widgets. Just visit Appearance -> Widgets in WordPress to drag-and-drop IDX Widgets into your theme widget areas.
Using Shortcodes
If you'd like to place IDX Broker widget in other places on your site you can also use shortcodes.
Navigate to the page or post where you would like to place your widget and (in visual mode) select the IDX logo to add a widget.

Choose IDX page links to add to your site
You may create a Custom Menu in WordPress using these pages, or re-order the display of these links under the Pages tab in WordPress.
NOTE: We cannot confirm that more than 500 links will work properly in your WordPress installation, as this may be dependent upon the setup and hosting of your WordPress account.
Considerations
If you received an error when attempting to save your WordPress settings, please verify that you have entered the correct API Key before contacting technical support.
For security reasons, we recommend updating to the latest stable version of PHP your web host provides (a minimum of 5.6). Please contact your host to upgrade your web server if you are using an earlier version. For more information on which versions of PHP receive security updates, see this page from the PHP website.
You can also check these links for some popular hosting services.
DreamHost
GoDaddy
BlueHost
Hostgator