Solution for others:
please add this to your custom css box in theme options:
.hidden_category{
display: block !important;
}
this will force display the cats.
Then I had to delete the words “Show All Categories” and the following code:
echo ”;
echo ”;
if ( count( $cats ) > 9 ) {
echo ‘Show all categories (‘ . count( $cats ) . ‘)‘;
}
from this file: /wp-content/plugins/the-events-calendar-community-events/lib/tribe-community-events.class.php
so that it wouldn’t say “show all categories” when all were displayed.