Showing “bsf-rt-reading-time” some statements showing in front page

Hi,

First of all, thanks for this plugin.

I’m using this plugin to show reading time in posts.

But showing codes in single post page like :
<span class=”bsf-rt-display-label” prefix=”Reading Time”></span>
<span class=”bsf-rt-display-time” reading_time=”1″></span>
<span class=”bsf-rt-display-postfix” postfix=”mins”></span>

And also bsfrt-frontend-css.css file have below statements,
.bsf-rt-display-label:after {
content: attr(prefix);
}

.bsf-rt-display-time:after {
content: attr(reading_time);
}

.bsf-rt-display-postfix:after {
content: attr(postfix);
}.

Any ideas how to solve this issue? Please help to fix this issue as soon as possible.

Thank you & regards,
Helani

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