Right sidebar for Blog page not showing

WordPress tells me there was a major change to the Customizr theme on Feb 9 and another today Feb. 17. I do not know which change affected my website but I was posting a new blog this morning and
noticed that the Blog sidebar for that page only is not showing.
My right sidebar for all pages has a search button first, and then a specific sidebar for each page underneath it. When I try to see my sidebars in WordPress, I am going to Appearance, Widgets and the widgets appear on the right side of the screen, but when I try to access them, they disappear.
Thank you.
PDServices