Dear @web4people,
Thanks for reaching out to us.
I understand your concern and would like to inform you that this issue is occurring due to a third party theme or plugin conflict. Our default CSS codes may be overridden by other theme or plugin CSS. This is not a bug in our plugin. We can fix this by increasing the priority of our CSS codes. Below, I am sharing the CSS codes that you need to add to Appearance > Customize > Additional CSS.
.mf-radio-option input[type="radio"]:checked + span:before{
content: "\f192" !important;
}
After including these codes, your issue should be resolved. I hope this clarifies the topic. Feel free to let me know if you have any other questions or need further clarification.
Best Regards,
Reju