Header, Menu, title does not display on the page

Sounds good.

Just One step ahead. I was able to place the right sidebar on all pages. The culprit was a default "Canvas layout" elementor template which was created by a consultant couple of years back. But I still have an issue with store page. One thing I noticed is that there is no sidebar option in Customizer-->Widget (in order to add widgets to the sidebar). So, I don't know it is an issue.
https://creativenatureart.com/wp-content/uploads/2020/07/Screen-Shot-2020-07-30-at-9.43.42-AM.png

Sorry so is the original issue resolved?

If so let's close this topic and you can open a new one for the separate question.

Yes & No, but for now I will close the ticket.

Sounds good.