about the button:
.lay-thumbnailgrid-load-more-wrap{
display: flex!important;
}
.lay-thumbnailgrid-load-more{
display: inline-block!important;
}
add this in:
lay options -> custom css & html -> custom css
or you could try and update lay theme before trying this maybe that fixes it not sure !
about this:
The row limit works perfectly in safari, but not in firefox, chrome and for the mobile version
ok lemme check!
