Hey,

I've checked your site and found that PayPlans - Registration plugin is disable at your site which is creating this 400 error.
For now i've enable this plugin and this error is no longer appears.
Please take a look at this issue again.

Have you disabled this registration plugin intentionally or by mistake ?

That seems to have disabled registration all together and forced users to pick a subscription,
we want the subscriptions to be optional. The users should be able to pick from the profile types for free
and pay for the special profile types should they want to upgrade.

Also it seems to only allow one profile type, clicking switch takes you back to the subscription page but selecting a different subscription does not change the profile type

Hey Greg,

That seems to have disabled registration all together and forced users to pick a subscription,
we want the subscriptions to be optional. The users should be able to pick from the profile types for free
and pay for the special profile types should they want to upgrade.

I've logged this into our issue tracker if registration plugin disable then it should not break the registration process.

Also it seems to only allow one profile type, clicking switch takes you back to the subscription page but selecting a different subscription does not change the profile type

I've checked and found that you have created only one app for Easysocial profiletype app which is for business plan.
You need to create for each plan if you want to show different profiletype to all plans.

Update us.

For now we have solved this problem by just requiring users to register first and pick a plan once they have logged into the site.