Wordpress Website has Issues Displaying Products Correctly

General information for the website: Sells herbal supplements
Description of requirements/features: When I add new products to my site, they are not showing correctly. This problem did not occur previously.

If you look at the following,
https://www.wonderofherbs.com/product/ivys-mukta-vati/
Below the product photo you will see the tabs
• Description
• Ingredients and Dosage
• Reviews

However If you look at the one of the new products I have just added
https://www.wonderofherbs.com/product/hibiscus-capsules/

The tabs are not in the correct order. It is showing:
• Ingredients and Dosage first (This should be the second tab)
• Description second (This should be first)
• No product description is showing - I have a full description of this product but it is only appearing whislt the page is loading. It then disapears.
• The Reviews tab has disappeared.

Things to Note:
• I have disabled all the plugins not essential for the operation of the site and the issue persists.
• The site was custom built but has 2 themes installed, both of which I have never updated (as doing so might affect the site), though updates are available.

Does the site code need updating to be compatible with the latest versions of wordpress/woocommerce or could it be due to the themes requiring an update?

This issue needs resolving.

A good job carried out could lead to extra work as I also require extra functionality adding to the site.
Extra notes: