Unable to remove class=”bwp-title hide” from website

Hi this class appears on all pages of the website. Is there a way to make it as a <div> or remove it all together from the website?

complete code is:
<h1 class=”bwp-title hide”><a href=”https://neoprenebags.net/” rel=”home”>Neoprene Bags</a></h1>

earlier i tried changing domain name in wordpress setting and the app crashed, had to recover it with the help of support. i’m looking for an easier alternative.

The page I need help with: [log in to see the link]