Problem:

My website is now registered to Toolset, and I am using the site key to register to the plugin to my website but it is not working.

Solution:

The problem you mentioned above is abnormal, please check these:

https://toolset.com/forums/topic/i-am-not-able-to-register-toolset-to-my-website/#post-2001507

Relevant Documentation:

Problem:
Is there a feature where Types can show the user's gravatar image?

Solution:
To display the gravatar image based on the email, you need to write the custom shortcode that should return the gravatar image based on email.

You can find the proposed solution in this case with the following reply:
=> https://toolset.com/forums/topic/is-there-a-feature-where-types-can-show-the-users-gravatar-image/#post-2001483

Relevant Documentation: