CB Plugin causes duplicate error

I use Membership Pro for my paid subscriptions and Community Builder for my free subscription. When I activate the CB Plugin I get an error, when I create a user using the Community Builder subscription form.

If I deactivate the plugin it's all fine. What do I miss by deactivating?

Best regards

Martin

I tried to paste the error code, but I get blocked, when i try:

Hi Martin

First time heard about the issue like this. Could you please submit a support ticket:

1. Sending us super admin account of your site

2. Let me know step by step what we need to do to see the error

I will check to see what's the reason of the error and get it sorted for you

Regards,

Tuan