Wrong H1 Text

I had run an SEO check on my site. It showed me that I had two identical H1 tags on the start page – one would be ideal according to the tool.
I found one in the logo and changed it – but it is no longer displayed to me. Instead of the page title, however, the source code still shows:
—-
*/phone*
</span><span class=”tdb-logo-text-wrap”><span class=”tdb-logo-text-title”>Black</span><span class=”tdb-logo-text-tagline”>version PRO</span></span></h1>
—-
How can I change that so that I have my page title on the start page as H1 – tag and the other one disappears. I searched the whole theme panel and the page with Composer, but couldn’t find this entry anywhere.
Can you help me so that the H1 page title and meta description are entered correctly?

Thanks!
Thomas

Perhaps that helps:
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Hello Vlad

Many Thanks, I had looked everywhere, and I would never have guessed that something might still be hiding there.

Have a nice day to your team and have a nice weekend soon.