We are having the same issue, checks are enabled and the same error keeps popping up. Net 30 does not show in check out either.
figured it out, add this to the css at the bottom of the portfolio layout that you are using and change the vp-id-364 to your layout id
.vp-id-364 .vp-portfolio__item-wrap .vp-portfolio__item-img-wrap:before{
margin-top:56.25%;
}
