Installing the plugin cripples the editor in wordpress. You cannot use the text box to edit or add text. Deactivating the plugin fixes the wordpress editor.
I would like to help you out. Currently our WP plug-in is compatible with the TinyMCE and CKeditor editing tools in WP. These are the two most popular editing tools available in WP.
It sounds like you may have another editing tool installed. If so do you mind sharing what editing tool you are using?
Please also contact me at firstname.lastname@example.org and I can directly assist you. I want to make sure our WP tool is compatible with your WP set up.