I tried to install custom PHP page to wordpress, now the website is only redirec

Hello, i have my website running with VPS using Apache2, WordPress is still working an i can access the WP-admin page. but anyother page won’t load. I tried to install custom php page (Presskit by Rami Ismail) — After I added the php page to my website’s folder and installed it, there was supposed to be a file named ‘data.xml’, but that file didn’t show up.. so i deleted the presskit.php from my server to try to install it again but after the installation i am still getting the php installation page of presskit when ever i open the website. I checked WordPress settings for the home page, and it’s still the same. When ever i try to open a link for my website other than wp-admin or the website, i get ‘ The page isn’t redirecting properly = An error occurred during a connection to https://www.crealodegames.com. This problem can sometimes be caused by disabling or refusing to accept cookies. ‘

How i can completely remove the presskit installation from my server to get everything working as before?

Thanks in advance!

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