Same, I'm having the same problem. Everything was fine yesterday, the day before, last week, et cetera.
Now, today, suddenly, I can't do anything. I write a sentence in a text box and it only shows up 30-70 seconds later.
HELP.
I need to compose this website's text IN the website; I can't think straight in a Write-It-Elsewhere-&-Paste-It-In sort of way. I need to write, space, rearrange, invent IN this web editor, as I was doing yesterday with no hiccups. What happened and how do I fix this? Squarespace! Helpl!