Problem:

I just migrated from development to production site and reentered the new key. I am still getting the error when setup Toolset site keys.

Solution:

Please check these:

1) Make sure you are using the latest version of Toolset plugins(especially the Toolset Types plugin), you can download them here:
https://toolset.com/account/downloads/

2) Follow our document to setup the Toolset site key, and test again:

Relevant Documentation:

https://toolset.com/faq/how-to-install-and-register-toolset/#installing-the-toolset-types-plugin

Problem:

Style container block with custom CSS class names.

Solution:

You can edit the page/post, find and select the "Container block", in the sidebar, section "ID & Classes", setup your custom CSS class names, see my screenshot:

https://toolset.com/wp-content/uploads/2021/04/2014395-container_block_css.jpg

Then use those custom CSS class names to setup your custom CSS codes.

Relevant Documentation:

Problem:

How do I translate the default label of a Toolset select field with WPML plugins?

Solution:

Please follow our document to translate the custom select field settings:

section "Translating custom fields with static options"

Relevant Documentation:

https://toolset.com/course-lesson/how-to-prepare-the-site-to-run-multilingual/