Gravity forms and Membership plugin

Hi I followed the idea that Mason gave in the forum topic

https://premium.wpmudev.org/forums/topic/gravity-forms-and-membership-signup#post-232538

and I got it to work by setting a user registration default on the General options of Membership.

Whether I have that set or not under General options I can not get another subscription plan to work.

please can you help asap?