Sorry for the delay. Please try this CSS snippet to enable the browser’s native radio and checkbox controls:
.hp-field input[type=checkbox], .hp-field input[type=radio] {opacity:1;margin-top:5px;margin-left:5px;pointer-events: auto;}
.hp-field input[type=checkbox]+span:before, .hp-field input[type=radio]+span:before,input[type=checkbox]+span:after, .hp-field input[type=radio]+span:after {display:none}
.hp-field--checkboxes ul li label, .hp-field--radio ul li label {pointer-events:none}
It’s a temporary fix until we fix the styled checkboxes in the core.