That's not possible with Virtuemart 1.x, but is with 2.x. The earlier version of Virtuemart will reject the auto-user creation process we use due to very (rediculously) strict code on what is and isn't allowed. Unfortunately, there was no way to get around that limitation with Virtumart 1.x, which is why if you're using the JFBConnect Profile Plugin for Virtuemart 1.x, we recommend setting the Registration flow to "Normal". If you don't do that, the proper user information won't be created in the Virtuemart tables and will cause multiple issues.
The auto-creation mode is available with our JFBConnect Profile plugin for Virtuemart 2.x.
Hope that helps answer your question, even if it's not exactly what you were looking to hear.
Thanks,
Alex
Unable to perform one click registration in virtuemart
