Hi Kyle,
thank you very much for you advice.
I created a free plan, and importing members to this plan works fine.
The idea of this Free Plan is only to give the members (who were transferred from an another site) some time to register for the regular paid plan.
In the "User Profile -> Subscription tab" (as shown above), is it possible to include an "Upgrade button"?
Or - even better - once a member logs in, can a message be shown asking them to upgrade?
Thank you very much for you advice!
Gert