Why there is HTML code on my page editor that isn’t showing on the website?

Hello good friends,

By mistake my web designer modified my page DEMOS on my wordpress site. The thing is that this demo page originally contained 4 categories in 4 rows instead of 3. The ones that remain are Promos, Tv and radio. But originally there was another one called OTROS (OTHERS).

Here is the website link:https://albertoluisvoice.com/demos/

He removed it, but on my wordpress session when I click to edit the page DEMOS, I can see just below the RADIO category that the OTROS row HTML is still there, but nothing appears on the website. This is the OTROS HTLM:

[bs_row class=”row?otros”]
[bs_col class=”col-sm-4 text-center”][/bs_col]<br class=”nc” />[bs_col class=”col-sm-4 sub-titulo”]OTROS[/bs_col]
[bs_col class=”col-sm-4 text-center”][/bs_col]
[bs_col class=”col-lg-4 col-md-4 col-sm-6 col-xs-12″]
<div><iframe src=”https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/185767439&color=ff5500&auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false&#8221; width=”100%” height=”166″ frameborder=”no” scrolling=”no”></iframe></div>
[/bs_col][bs_col class=”col-lg-4 col-md-4 col-sm-6 col-xs-12″]
<div><iframe src=”https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/185767439&color=ff5500&auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false&#8221; width=”100%” height=”166″ frameborder=”no” scrolling=”no”></iframe></div>
[/bs_col][bs_col class=”col-lg-4 col-md-4 col-sm-6 col-xs-12″]
<div><iframe src=”https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/185767439&color=ff5500&auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false&#8221; width=”100%” height=”166″ frameborder=”no” scrolling=”no”></iframe></div>
[/bs_col][/bs_row]

What can I do to bring it back?

Thank you so much for your time!