Profile: Jason Bajor

Problem:
Custom Field Checkboxes Stripping HTML Link

Solution:
By default, Types sanitize field label for the custom checkboxes field options.

To allow custom HTML in checkboxes field option, you should try to add the following code to your current theme's functions.php file:

add_filter( 'types_sanitize_field_labels', '__return_false' );

You can find the proposed solution in this case with the following reply:
=> https://toolset.com/forums/topic/custom-field-checkboxes-stripping-html-link/#post-1942069

Relevant Documentation: