Hello World pages showing up on my website

Hi!

I’ve got a problem with my site. Long story short I had Cloudflare SSL activated on my Hostinger website for over a month, and now I decided to create a subdomain. After that I was getting an Error 525 on the child website, so I changed to Flexible SSL in Cloudflare.

But now the homepage of my main site https://www.staudtmedia.com has a default WordPress ‘Hello World!’ page. As well as: https://staudtmedia.com/videography/.

Currently, the only pages working are:
https://staudtmedia.com/web-design/
https://staudtmedia.com/graphic-design/
https://staudtmedia.com/about-us/
https://staudtmedia.com/contact-us/

I tried to change to all the Cloudflare SSL/TLS encryption modes as well as deleting the certificate and recreating one, still the same. Well actually when I deleted the SSL the site actually did work properly but without the SSL.

Any help will be appreciated. Thanks in advance!

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