Fresh new hosting doesn't allow me to access WordPress

Hey everyone!
Yesterday I bought a WordPress hosting (the perso2014 offer) for building a website.
When asked, I've also checked on automatically installing WordPress and have an SSL certificate available.
An hour later my transaction, I received an e-mail that I could login to WordPress, but......
Whenever I try to go to liberarugbyclub.it/wp-admin or liberarugbyclub.it/login, I get redirected to a default homepage

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And if I try to got with https, it tells me that the page can't be found!
I've tried to reinstall the CMS module countless times but the end result is always the same. How can I solve this?

Thank you so much!