Title showing as this: _

what is the code in the title tags <title> ... </title> in header.php?

the browser tab shows ‘_’ when your site is opened.

https://codex.www.ads-software.com/Meta_Tags_in_WordPress

add a meaningful ‘site title’ and ‘tagline’ in ‘dashboard’ ‘settings’ ‘general’

-it is a common mistake to leave these fields blank, because they obscure the header image;
the title and description can be removed from your header image using css:
add this to style.css of your theme, or edit the corresponding styles:
#headerimg a, .description {visibility: hidden; }

and/or consider the use of an seo plugin.

Alchymyth

You know me too well! I have followed your instructions and the tile shows in the tab now.

On the search engine, it still shows as: _
I am guestting this is the part with the header. I have copy and paste the code I have:

<title><?php bloginfo('name'); ?> <?php if ( is_single() ) { ?> &raquo; Blog Archive <?php } ?> <?php wp_title(); ?></title>

Thanks again for your help again

search engines only crawl sites ever so often.

if it shows in your browser, the search engines will eventually pick it up as well.

Alchymyth

The site name does not show in the browser. If I search the site name, I get:

_
etc, etc
twi.com