Problems after recent update

I am currently using the Sliding Doors theme with my website: https://www.klearinspiration.com

Since the most recent update, I am missing two blogs, and it looks as if two of my other blogs are sitting directly on top of one another, my widgets no longer carry the images which directly link to my social media sites (not a plug-in, but HTML text), there are some pages from my menu which are completely blank – but when I go to edit the page through the dashboard – all the content is there, along with the photos from my gallery missing.

I have daily traffic to my site from clients & potential clients, and to avoid them from seeing the mess that is up on my site currently, I have a “construction” sign up.

Has anyone else had this problem since the recent update?