My sites Sidebar is loading in incorrect position on certain pages

New to this forum and wanted to wish everyone a happy Christmas and Hanukkah!

The sidebar on my WordPress site loads wrong on our "single product pages" such as *this*; this occurs on desktop browsers.

I would like these sidebars to load *directly* to the right of the main content like it currently does on my sites homepage yet currently they load down the bottom of the "single product pages"(see our attached image for an example)

I believe its loading this way because of some unknown flaw in the sites current CSS. I have tried varies things to get to the bottom of this but can't seem to get it to load the way I want. Anyone know why this is happening and possibly how I can fix it??

Thank you kindly