Site Origin Button Glitch

I’ve been creating a site with Sydney theme, and the SiteOrigin plugin was required for the theme. After I had been using the WordPress dashboard for an hour or two I noticed some glitches, and couldn’t access some pages within the Pages tab, and also the Appearance tab. So I disabled all the plugins and I could access them again straight away, so I started again.

When I enabled the plugin again it was ok for a few hours, and then started glitching again.

The errors displayed are
“Edit Add SiteOrigin Button” with broken hyperlinks.
And “SiteOrigin Button” underneath in bold.