Can't add elements to page.

I’m trying to edit page content by adding an element. I click the “EDIT” link under PAGE CONTENT, then click on the PLUS symbol to the right. Normally it would show all the elements that can be added, but for the last two days it opens an empty box. Even after waiting, the options in the box never show.

I’ve done this many times before, so I am very familiar with the process. I’ve never encountered this before.

Which browser are you using? Seems Chrome has some strange things going on when signed into my site. 

I am using Safari. Has not been a problem for the last several years. I have tried Chrome, but Chrome won't allow me to login to SquareSpace at all, even using the same credentials I use for Safaril