Restoring WordPress Site

Hi all, newbie here and would appreciate some help!

I have a Wordpress site originally hosted with GoDaddy and recently moved my domain over to Google Domains. To take advantage of the SSL security, I have registered and redirected my nameservers to Cloudfare.

On the surface, everything looks good - the SSL padlock shows on my site but now my main page looks like this:

I can login in to cpanel, but if I enter the address for the Wordpress login, https://www.shayanqadir.com/wp-admin/, I get a 404 error message.

How do I restore my existing Wordpress site to Cloudfare and access it? I saw that there is a Wordpress plugin but i’m not sure if that would re-activate my existing website or overwrite it?

Any help much appreciated!