Pages have disappeared from dashboard & site

Hi all

I don’t know if i have accidentally done or activated something but my site has changed. I must mention i am not at all a pro at web development thats why wordpress is the best.

I have been building the above mentioned website for a 2 months or so, page by page. By 30 December i had 8 pages, live and working perfectly. Today when i logged in to continue working my latest 2 pages, namely Departments and Bishop S Musepa had disappeared with no trace, its like they were never there, no link no page. Looks like my media library is also not loading correctly.

I did not change anything on the site and i do not code so i did not do that either.

Does anyone know what might have caused this and if there is hopefully a fix. I looks like the site has “reverted to an earlier point in time” in simple terms.

I checked my history and confirmed that the pages were there and were active. Now i get the 404 error.

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