^^&&^^

Edit File: heartbeat.tpl.php

<?php
namespace LiteSpeed;
defined( 'WPINC' ) || exit;

$this->form_action();
?>

<tr>
		<th>
			<?php $id = Base::O_MISC_HEARTBEAT_FRONT; ?>
			<?php $this->title( $id ); ?>
		</th>
		<td>
			<?php $this->build_switch( $id ); ?>
			<div class="litespeed-desc">

<?php echo __( 'Turn ON to control heartbeat on frontend.', 'litespeed-cache' ); ?>
			</div>
		</td>
	</tr>

<tr>
		<th>
			<?php $id = Base::O_MISC_HEARTBEAT_FRONT_TTL; ?>
			<?php $this->title( $id ); ?>
		</th>
		<td>
			<?php $this->build_input( $id, 'litespeed-input-short'); ?> <?php $this->readable_seconds(); ?>
			<div class="litespeed-desc">
				<?php echo sprintf( __( 'Specify the %s heartbeat interval in seconds.', 'litespeed-cache' ), 'frontend' ); ?>
				<?php echo sprintf( __( 'WordPress valid interval is %s seconds.', 'litespeed-cache' ), '<code>15</code> - <code>120</code>' ); ?><br />
				<?php echo sprintf( __( 'Set to %1$s to forbid heartbeat on %2$s.', 'litespeed-cache' ), '<code>0</code>', 'frontend' ); ?><br />
				<?php $this->recommended( $id ); ?>
				<?php $this->_validate_ttl( $id, 15, 120, true ); ?>
			</div>
		</td>
	</tr>

<tr>
		<th>
			<?php $id = Base::O_MISC_HEARTBEAT_BACK; ?>
			<?php $this->title( $id ); ?>
		</th>
		<td>
			<?php $this->build_switch( $id ); ?>
			<div class="litespeed-desc">
				<?php echo __( 'Turn ON to control heartbeat on backend.', 'litespeed-cache' ); ?>
			</div>
		</td>
	</tr>

<tr>
		<th>
			<?php $id = Base::O_MISC_HEARTBEAT_BACK_TTL; ?>
			<?php $this->title( $id ); ?>
		</th>
		<td>
			<?php $this->build_input( $id, 'litespeed-input-short'); ?> <?php $this->readable_seconds(); ?>
			<div class="litespeed-desc">
				<?php echo sprintf( __( 'Specify the %s heartbeat interval in seconds.', 'litespeed-cache' ), 'backend' ); ?>
				<?php echo sprintf( __( 'WordPress valid interval is %s seconds', 'litespeed-cache' ), '<code>15</code> ~ <code>120</code>' ); ?><br />
				<?php echo sprintf( __( 'Set to %1$s to forbid heartbeat on %2$s.', 'litespeed-cache' ), '<code>0</code>', 'backend' ); ?><br />
				<?php $this->recommended( $id ); ?>
				<?php $this->_validate_ttl( $id, 15, 120, true ); ?>
			</div>
		</td>
	</tr>

<tr>
		<th>
			<?php $id = Base::O_MISC_HEARTBEAT_EDITOR; ?>
			<?php $this->title( $id ); ?>
		</th>
		<td>
			<?php $this->build_switch( $id ); ?>
			<div class="litespeed-desc">
				<?php echo __( 'Turn ON to control heartbeat in backend editor.', 'litespeed-cache' ); ?>
			</div>
		</td>
	</tr>

<tr>
		<th>
			<?php $id = Base::O_MISC_HEARTBEAT_EDITOR_TTL; ?>
			<?php $this->title( $id ); ?>
		</th>
		<td>
			<?php $this->build_input( $id, 'litespeed-input-short'); ?> <?php $this->readable_seconds(); ?>
			<div class="litespeed-desc">
				<?php echo sprintf( __( 'Specify the %s heartbeat interval in seconds.', 'litespeed-cache' ), 'backend editor' ); ?>
				<?php echo sprintf( __( 'WordPress valid interval is %s seconds', 'litespeed-cache' ), '<code>15</code> ~ <code>120</code>' ); ?><br />
				<?php echo sprintf( __( 'Set to %1$s to forbid heartbeat on %2$s.', 'litespeed-cache' ), '<code>0</code>', 'frontend' ); ?><br />
				<?php $this->recommended( $id ); ?>
				<?php $this->_validate_ttl( $id, 15, 120, true ); ?>
			</div>
		</td>
	</tr>

</tbody></table>

<?php $this->form_end(); ?>