Text Formatting (there are no spaces)

[ Moved to the Fixing WordPress sub-forum. ]

Hi, the text formatting for my website https://www.m-u-s-e-u-m.com has recently changed. No matter what I do in the editing page, the text (and all the imagery) is all smushed together with no spacing between sections. No matter how many times I press enter or the space bar, on the actual post everything is lumped together. Why is it no longer reflecting the formatting on the editing page? How can this be remedied?