You mentioned having several sites with different installations of mojoPortal at different versions.
However my records show that you have a Single Installation License of Form Wizard Pro purchased in 2010.
While my products have no locks to prevent it, it is a violation of the license to use it in multiple installations. You should either purchase a license for each installation or purchase a Server License to support multiple installations on one server or an Enterprise License to support multiple installations on multiple servers. Or only use the product in one installation.