4.5.2 update issues – vimeo videos not showing & pages can't be edited

I am having major issues and need them fixed ASAP…. I have emails out to our database of 15K people and we are sending them to an incomplete link at this point (UGH! Major Ugh!)…
https://www.drmikethomson.com/best-year-ever/ — all the videos on this page are not showing ever since the update.
I do NOT want automatic updates… they screw things up every time!
I login to wordpress and try to edit the “best year ever” page and it just keeps saying “loading, please wait…” and won’t load the page to even edit it… (which I don’t need to edit it really… just check out what’s going on and why the videos are showing on this page since the update.)
HELP!!!! Thank you so much to whoever helps! I need this fixed ASAP!