SEO Titles are all the same.

I am experiecing another issue with the SEO

<title></title>

tags. No matter what page I am browsing, the title attribute is the same in every page. I am using Yoast SEO Plugin.
And another thing. Is there a way to add a breadcrumb navigation to it.

Thanks. BTW website is https://herowp.com/ask-and-answer/

Thanks