FT Slider 403 error

Thanks for a great theme. Its my first time using WordPress and its been very easy to navigate. I am trying to add the slider to what will be the Home Page. I first started with the slider, but then kept getting a 403 error as soon as I add the FT: Slider widget and update – “Forbidden You don’t have permission to access this resource. Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.” So I started with all the other widgets on the page and left the slider till last and it is still giving a 403 error.

I redid the page as the sample Home Page that was imported had “Home – Front Page” instead of “Home – Site Origin Page Builder” and I could not access the widgets when editing the page. It just showed a list like this:
[siteorigin_widget class=”FT_Widget_Service”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Service”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Service”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Heading”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Portfolio”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Heading”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Team”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Team”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Team”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_CTA”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Heading”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Testimonial”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Counter”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Counter”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Counter”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Counter”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Heading”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Blog”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_CTA”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Heading”][/siteorigin_widget]
[siteorigin_widget class=”FT_Widget_Logo”][/siteorigin_widget]

Please could you let me know how to get the slider working? Is it just a setting that needs to be changed? Thank you.

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