WP doesnt power site root but subdirectory /wordpress!

hello,

I have installed a blog for a friend in the subdirectory /wordpress

https://cindyehrlichmann.de/wordpress

but want it to powered by the site root

https://www.cindyehrlichmann.de/

While doing the required changes, I must have done something wrong, because now, the site isnt available under the main domain. Instead you can find the main page still under the /worpress URL, but also no further content, and the layout changed as well (font size of navigation for instance)!? what’s happening?
please help! I’m not a pro and appreciate any assistance!

thanks a million in advance!

isherwood22

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In more detail, here is what I did:
according to these instructions:
– I changed the site address to the root directory’s URL (www.cindyehrlichmann.de) in the WP-Panel
– using my ftp-client, I copied the index.php file and changed the “require”-line as required

I didnt do anything with a .htaccess file though. As far as I know, I dont use permalinks and therefore the file is not existing. only have a htaccess-Datei.txt in my root directory (?)

I hope that helps.