[For 1.6] [Updated] Invitation System

[cfillion]

Sorry but I did not understand.
What idea to enable this plugin if registrations are closed?
Open registrations, and if you want that an invitation code is required, just enable the "Is the invitation code is required" setting.

so please add condition if user registered on forum don't create invitation code else create invitation code

??
You're not supposed to invite members already registered.