Post Title Format is not work on Title Tag Rewriter page

I am using Woocommerce with your SEO plugin, I changed the default Post Title Format to “{post} | {category} | {blog}” on Title Tag Rewriter page, the product title is not work, e.g. the product name is “ABC” base on category “ZXY” and my blog name is “123”, if Title Tag Rewriter is work fine, the product title will be changed to “ABC | ZXY | 123”, right? But, in fact, I got “ABC | | 123”, the category name can’t output. Please help me, how to fix the issue?

https://www.ads-software.com/extend/plugins/seo-ultimate/