I have Zencart v1.5.0 with ozpost module but no matter what settings I have all I can get is the Flat Rate to show on the website. I did have the old version which has now become obsolete and I have uninstalled it in the admin panel and I did uninstal and reinstall the ozpost module in the admin panel and it is still has not changed. Is there anything else that I can do to get this working.