Hi @jamie_lee,
It looks like there might be a styling conflict between the site theme and the forms. It seems that you might have fixed the theme’s check mark appearance with custom CSS.
In case you’d like to have the default check mark in the checkbox field, you can use the following CSS snippet:
.wpforms-container input[type=checkbox]:checked:before,
.wpforms-container input[type=checkbox]:before,
.wpforms-container input[type=checkbox]:checked:after,
.wpforms-container input[type=checkbox]:after {
display: none !important;
}
.wpforms-container input[type=checkbox] {
-webkit-appearance: checkbox !important;
-moz-appearance: checkbox !important;
appearance: checkbox !important;
}
And in case it helps, here’s a tutorial from WPBeginner on how to add custom CSS like this to your site.
Hope this helps!