Website Php Not Showing?

Hi everyone,

just installed wordpress on a new domain using the 1 click installer provided by my hosting provider. When I go to the default login page though I don't see the username and password prompt, just the default placeholder adware page. Tried clearing my cache, installing new browsers, using my cellphone and same thing every time. I was able to get to the login screen once but the credentials got refused, since then no luck. Even uninstalled and reinstalled the wordpress. Never seen anything like this before, anyone got any tips?