Hello @ulbo67
Thank you very much for the review.
If you want to use numbers with comma symbols, you should configure them to use comma as thousands separator (the attributes are available in fields’ settings). Concerning to the design, the plugin is distributed with multiple predefined designs you can select through the “Form Settings” tab:

Furthermore, if the predefined designs do not satisfy your project’s requirements, you can to redefine the styles through the “Customize Form Design” attribute in the same section. The list of class names used by the plugin are listed in the following FAQ entry:
https://cff.dwbooster.com/faq/#q82
Best regards.