Reply To: Forums index does not work

line 2930 of your custom css file changes this for

@media screen and (max-width: 400px)

using

.list-view .site-content .cat-links, .list-view .site-content .entry-content, .list-view .site-content .entry-summary, .list-view .site-content footer.entry-meta {
    display: none;
}

you need to add some custom css for instance

@media screen and (max-width: 400px) {
.list-view .site-content .cat-links, .list-view .site-content .entry-content, .list-view .site-content .entry-summary, .list-view .site-content footer.entry-meta {
    display: initial !important;
}

}