Add a free simple customizable mortgage calculator to your web site.
For some unknown reason this plugin doesn't work on some commercially available WP themes. Unfortunately we won't be able to help in such case as we don't have access to these themes and we can't test what is causing an error.
Please contact us if you have further questions or suggestions. In case you have an issue with this plugin please send us WordPress version, the name of theme and list of plugins you are using.