DW design left colum

DW editing front page; not normal anymore and fully updated too.

"Left side is invisible;" something happened last week and things look like
bootstrap or something had a change. I cannot use DW or Edit and entire pages
with bootstrap as words or text are aligned left and out of the picture , and different than all of last year, and I did
not update or change computer in any way. I must have clicked something. When
It says safe ‘bootstrap’ updates, something I do not see them and click
it.  I do not know  what to do?

This issue is not updates or my computer, I must have punched something
that skewed all the pages. Help/ The cursor does not go left, the words and
pages disappear on the  left side and it
also something shows up on the web . I tried many times to reset DW workplace.

bookoflife.org Michael

DW 2015, I like it and it did not cause me the problems, been using it for two years now. It was something I must have clicked? Please help.