Hello,

Sorry to say but this Custom Taxonomy page is coming through a third-party Plugin not from the Theme end, which is why the Theme Settings options aren’t completely taking effect on that. Its sidebar has an order-last being generated on it which is why the sidebar is appearing on the right.

So, we have applied the following Custom CSS on your Site specifically for this page to make the Sidebar appear on the left side:

.tax-danh-sach-xe aside.sidebar-container {
    order: unset !important;
}

Please check back your Site after completely clearing the browser and server cache.

Location to find Custom CSS, go to Dashboard >> Theme Settings >> Custom CSS >> Global CSS section >> there you can find the CSS pasted.

Best Regards.