Sharing Issues

I am also having problems with social sharing. Posts are not being shared when I publish to my self hosted site. I have tried switching on and switching off sharing in Jetpack; disconnecting and reconnecting services; any advice, please?

Also, in general, when I publish a post, although it is published, I get a white screen Instead of a refreshed edit page. All that is on the screen in my browser is SS. I thought this might be something to do with a plug-in (Open Graph for Facebook, Google+ and Twitter Card Tags) as if I don’t save the post as a draft first, if I hot publish all info in the fields associated with the plugin vanish, but I disabled it and the publication issue still happens. Again, any advice would be welcome thank you.

I’m using the Classic Editor interface, because I find the new interface far too complicated and cumbersome for my needs and for others working on my site.

Thank you in advance for any suggestions.

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