Incorrect URL Shows Up In Google Search

Hi, can anyone please help me!

When I google my website, the homepage shows up with the correct domain, however, all other pages show up in Google Search with the domain that is allocated by Squarespace and with the sitetitle "Squarespace".

If I click on my website through the correct domain and go through the page links in there, they all show up correctly. But in google search, they do not. How can I fix this? 

I've gone into each pages settings and the SEO preview shows up correctly with the page title, site title and URL slug.

Thank you

A few questions:

• What's your correct domain?
• If you search google for site:https://[yourdomain]] do you see your pages listed? 
• How long has the site been live?
• How long was the site publicly available on the built in domain before you assigned your custom domain?
• Have you registered the site with Google Search console?

Hi @KyKyKy,

I would be happy to help you. Could you please share your website link? Is it connected with Google Search Console? That way, I can take a look and provide you with a suitable solution.

Thanks,
Sifat