Inserting a Slider into a cell

Hi Tobias,
I wanted to insert a Master Slider (in my case [masterslider id=”3″]) into a cell of TablePress.
Unfortuanlety it doesn’t show up on the frontend as soon as I log out from WordPress.
Could it be that my additional CSS for this table creates the conflict?

.tablepress-id-5 .column-1 {
width: 250px;
}

.tablepress-id-5 .column-2 {
width: 640px;
}

.tablepress thead th,
.tablepress tfoot th {
background-color: #66a0ab;
}

.tablepress-wrapper {
overflow-x: scroll;
overflow-y: hidden;
}

Or did I do wrong any other thing? Many thanks for your help.

The page I need help with: [log in to see the link]