SiteOrigin Button error

Hi, I’m using Page Builder on my site.
I have a page with a SiteOrigin Button on it.
if I try to duplicate or edit the button the page tries to reload, then a blank page appears with the date and time on it.
If I reload the page, it reverts to the saved page.
can you help?

this does not happen with other widgets.
I am able to duplicate the whole row, then move the button to where I need it, and delete the unused bits of the duplicated row, so I have done what I needed to do, just not in the normal way.

thanks

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