this is my solution (it works for image pop up, but i don't test it yet for text and video)
1. login to your cpanel
2. open your css file which is located at wp-content/plugins/milat-jquery-automatic-popup/lib/css/style.css
3. dont forget to backup first your css file with other name
4. change value of #karartma with this :
#karartma {
background-color: #000000;
display: none;
left: 0 !important;
position: absolute !important;
top: 0 !important;
z-index: 99998 !important;
}
5. change value of #kutu .window with this
#kutu .window {
border: 20px solid #000;
border-radius: 5px 5px 5px 5px;
box-shadow: 0 0 20px #000000;
display: none;
position: absolute !important;
top: 25% !important;
left: 30% !important;
z-index: 99999 !important;
width: 40%;
height: auto;
}
6. add a new class name #pencere img, and give this value
#pencere img {
width :100% !important;
height: auto !important;
}
7. save it and done