Elementor Theme Builder > Meta Box Group Skin Does Not Exist

Hello,

I'm following this Meta Box Tutorial: https://docs.metabox.io/tutorials/create-recipe-meta-box-elementor

The site has the following installed and active:

1. Elementor and Elementor Pro
2. Meta Box and Meta Box AIO with Elementor Integration active

ISSUE DESCRIPTION:
In the Theme Builder, the option to create a Meta Box Group Skin does not exist. I can create a Section and designate its location as a Meta Box Group Skin, but that doesn't produce the expected result.
When adding dynamic data in Elementor, I can only choose the Fields Group, not any of its sub-fields. I have a group field named "Leader" and sub-fields named "Name" and "Number". Neither of the sub-fields are accessible to the integration.

VERSION INFO:

• WordPress 6.1.1
• Elementor 3.7.5 (like in the linked Meta Box tutorial)
• Elementor 3.8.2 (I also attempted with the latest version)

Thanks!