<div id="myModal" class="modal fade" role="dialog">
		<div class="modal-dialog">

			<!-- Modal content-->
			<div class="modal-content">
				<div class="modal-header">
					<button type="button" class="close" data-dismiss="modal">&times;</button>
				</div>
				<div class="modal-body text-center">
					<?php
					if (wp_is_mobile()) {
						echo '<img src="https://www.techcompose.com/wp-content/uploads/square2.png"  class="img-fluid" />';
					} else {
						echo '<img src="https://www.techcompose.com/wp-content/uploads/square3.png"  class="img-fluid" />';
					}

					?>
					<a href="<?= site_url() . '/contact-us';?>" class="btn btn-primary btn-offer" >Contact Us</a>
				</div>
			</div>

		</div>
	</div>


	<script type="text/javascript">
		function setCookie(cname, cvalue, exdays) {
			var d = new Date();
			d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
			var expires = "expires=" + d.toUTCString();
			document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
		}
		<?php if(!$_COOKIE['popup'] == 1) { ?>	
			jQuery(document).ready(function(){
				setTimeout(function() {
					$('#myModal').modal();
				}, 5000);
				setCookie('popup', '1' , 3600);				
			});	
		<?php } else { ?>
			var now = new Date();
			var time = now.getTime();
			time += 3600 * 1000;
			now.setTime(time);
			var value = 1;
			document.cookie = 
			'popup=' + value + 
			'; expires=' + now.toUTCString() + 
			'; path=/';
		<?php } ?>
	</script>
JS/jQuery