Brand new site, old header on Google

Hi everyone,

I work for a marketing agency. We recently created a whole new website for one of our clients. So far, everything good. Only problem is that when you search for the website in Google Search, the website comes up with the old Heading. I crawled the website with Search Console, we changed the SEO settings in Webflow, but nothing has changed.

It's the first time it happens. We created around a hundred websites for clients and we never ran into this problem.

As mentioned, we use Webflow to create websites. Does anyone have any idea of what to do here?